Ice Equipments

At 11:40 pm April 14, 1912, on a moonless night, clear, with calm seas, RMS Titanic, considered the "practically unsinkable," struck an iceberg in the North Atlantic. He sank 2 hours, 40 minutes later at 2:20 am the next day. Of the nearly 2,227 passengers aboard, only 705 survived. This was his first trip. Titanic was not the first ship hit an iceberg and was the last.
Icebergs are blocks of freshwater ice that flow, called "calving" glaciers and floating in the sea. Icebergs are found in both Arctic and Antarctic regions, but differ in shape and size of each region. Arctic icebergs are formed from mountain glaciers and are generally tall and narrow. Icebergs called castle, above the water forms resemble the towers. In Antarctica, large, huge and at some point, upper flat pieces of ice break off of ice shelves and are called tabular icebergs. The Arctic produces 10,000 to 50,000 icebergs annually and typically have a four year life.
To be classified as an iceberg, the ice must originate in glaciers. The height must be greater than 15 feet (5 meters) above sea level, the thickness should be 95-160 feet (30-50 meters), and the area must cover at least 1,500 square feet (500 square meters). There are small pieces of ice known as bergy bits and growlers. Bergy bits and growlers may come from the glacier or ice shelf, and can also be the result of an enormous iceberg that has broken.
Icebergs are usually white or light blue. White is snow on the iceberg. The blue light is due to scattering of light blue, in the same way that the sky blue. However, there are icebergs in which, during their training, different colored earthy materials embedded in the ice.
A "little iceberg" is classified as a medium piece of ice. Its height is usually more than 3 feet (1 meter), but less than 15 feet (5 meters) above sea level and its area is normally about 300-900 square feet (100 to 300 square meters).
Growlers are small pieces of ice and are about the size of a truck or a grand piano. They are often transparent, but can appear green or black color. Extend to within 3 feet (1 meter) above the sea surface and covers an area of ​​approximately 60 square feet (20 square meters). The green color comes from algae that grow on the submerged portion that is exposed when she turns around to see.
The icebergs are as much a threat to the shipping industry today as they were in 1912. The captains are tired of the smaller pieces. As a result of the sinking of RMS Titanic, the Guard patrols the ice began to plot the location of icebergs. Until the Second World War, patrols have been conducted routinely ice this control. After the war, aerial surveillance became the primary method of examination of ice.
Today is the Coast Guard's authority to operate the International Ice Patrol (IIP)-translates as International Ice Patrol. Its mission is to control the dangerous icebergs near the Grand Banks of Newfoundland, provided the limits of all the ice and make them known to the maritime community. The ships in the vicinity of the "ice edge" usually pass just south of the border.

The vessels passing to monitor ice edge at risk of a collision with an iceberg. In this area, the Labrador Current crosses the warm Gulf Stream. The temperature differences between the two bodies of water can reach 36 ° F (20 ° C), which often results in a dense mist. The combination of icebergs, fog, severe storms, fishing vessels and shipping lanes makes this area one of the most dangerous to navigate.
Category

Height

Length
Growler

<3 feet (<1 m)

<16 feet (5 m)
Bergy Bit

13.3 feet (1.4 m)

15-46 feet (5.14 m)
Small

14-50 feet (5-15 m)

47-200 feet (15-60 m)
Medium

51-150 feet (16-45 m)

201-400 feet (61-122 m)
Large

151-240 feet (46-75 m)

401-670 feet (123-213 m)
Very Large

> 240 feet (> 75 m)

> 670 feet (> 213 m)
The NIC (National Ice Centre) is a unique team of U.S. government, as it is composed of U.S. Navy, USCG, and NOAA on active duty and civilian personnel. While the international investment position, by the USCG, monitors the activity of the iceberg in transatlantic shipping routes, the network card monitors the activity of the iceberg in Antarctica

Sushi And Sashimi Tuna And Salmon

Very fashionable in recent years, sushi has become a passion for some people and restaurants that serve this kind of food have proliferated like mushrooms all over the world.

Sushi and sashimi tuna and salmon

I will not say that making sushi is easy, but do not require a master's degree in Japanese cuisine to make this delicacy. You can consult many books, or the source of the information, ie Internet. There you can find a thousand and one variations to prepare the fish. But what is really important to know how to make sushi yourself. At first, we'll probably go something weird, but as we shall see that the practice is not so difficult and we pleasantly surprise our guests.


Sushi, Japanese preparation, is appreciated worldwide. Small and delicate masterpieces, modeled by hand, rolled or arranged in small bowls, are aesthetic and culinary EXPERIENCE and genuine. The Japanese believe that food should prevail every way. Therefore, the dedication and presentation will also prevail in the kitchen. Its flavor has its secrets in preparations from rice flavored, fresh fish and crisp vegetables, delicious sushi are as exquisite as healthy. Slightly aromatic, low in fat and rich in vitamins and minerals. The sushi, served as a main dish or second dish is eaten with chopsticks or fingers. The snacks are soaked in a mixture of soy sauce and wasabi and eat a snack (SUSHI, ed. Blume)
I decided to make this dish as a nice recently captured by trolling on my way to a brand to fish thoroughly. You can prepare this type of dish with almost any fish, but fish is the blue where the sushi at its finest.

Let's make a homespun sushi, something simple yet original and sooo tasty. Particularly, I like to serve as a starter with a good beer or a sparkling white wine and fruity. The ingredients to use can be purchased at any well-stocked supermarket or Asian food stores.Ingredients:

    * Glutinous rice
    * Rice vinegar
    * Salt and sugar
    * Nori seaweed
    * Wasabi
    * Ginger, preserved or pickled
    * Free fish bones and skin


And the modus operandi is as follows: first we will prepare the rice, and for that we'll leave it simmer according to package directions. Apart from a small pot will get a splash of rice vinegar with a pinch of salt and a sugar. We put the fire and when have dissolved, remove from and add to rice and boiled. Let rice cool completely.
While the rice is cooled, prepare the fish. There are two ways. If we buy it we tell the fishmonger / to get us out the spines and thorns free or, in other words, if we caught the fish yourself, then prepare the fish touches on our own. I do well: the scaly with a cuhillo, after I take the guts and with a sharp knife make a cut at the height of the head along the spine to reach the tail, then I cut up the belly until out the whole side of the fish. Then put the back on the part of the skin with a knife and I take the skin. It only remains to make the strips to put on the roll.
CLEANING THE FISH:
Cleanse the fish by cuttingrunning from the anus to the base of the gills
We try to make us look good clean

Ice Fishing Equipment - Provide easy catch for all

Ice fishing as a sport has gained popularity in recent years and thanks to the publicity created by the media. You will find all information about the sport in television programs, magazines and on several websites. What makes this outdoor activity so unusual is that going to be, literally, ice fishing! Of course, you will need equipment special ice fishing and fishing license before you can start with some excellent tips for ice fishing professionals. You will also need adequate equipment ice fishing, as the normal winter clothing will not suffice. Ice fishing is considered cooler than when in the streets in winter
              While ice fishing is considered to be a relaxing activity, it is vital that you use the equipment right ice fishing and ice fishing gear to protect themselves while enjoy sport fishing in the open. It is very difficult to achieve skills in this sport, so whenever you can, ask questions and get some expert tips ice fishing, which will help you master the basics of this activity.
               One of the most essential equipment for the fishing expedition on the ice is an ice shack, which is a kind of box around it, while fish for protection from the cold winds that blow during the winters. Specific equipment includes another good quality ice fishing rod, reels, lines, fishing tackles, raises the point and most importantly, augers, making it easy drilling a hole in the ice. Electronics have also done much to help fishermen catch lots of fish. Flasher is an electronic device used by all anglers to fish on the ice, as it shows the bait, the structure and fish clearly to them. Today, it has become a permanent team for ice fishing.
          Your team ice fishing should support longs hours in the cold. You should wear layers of warm clothing, especially when the temperature drops below zero degrees . good quality shirt, gloves, boots and socks are a must to protect your body against the cold. Fortunately, the fishing gear most recent ice offer the best comfort in a time much less than those used previously. Fishing Ice is not for the faint of heart, as it requires a lot of mental strength to cope with the temperature corresponding to the degrees less. You must follow all guidelines provided by various sources to make this expedition a success. After have gained some experience, you will realize that ice fishing is much more fun than it was strenuous activity during the early days. It has become more bearable thanks to the latest equipment and ice fishing gear available present.

Fishing Video Games

Rival gaming powered online casinos have a new and exciting online version casino game this month. Nuclear Fishing has five reels and twenty pay line video slot game online casino. It comes with an underwater theme, where players are the containers of nuclear waste and nuclear bombs. Online casino slots players have to clean the ocean floor as they enjoy the game and win prizes.

Although players are complying with the serious task of cleaning the bottom of the ocean, yet we find that the slot is not the touch of a serious subject, but also fun. The symbols found in Fisheries Nuclear online casino slot game includes an octopus, a seahorse, crabs, a diver, a number of fish, a nuclear bomb, and jellyfish. Due to the nuclear component in the game, players will find that many sea creatures have some sort of disfigurement, such as the one-eyed octopus.

The jackpot symbol found on rival online games casino slot games is symbolized by the symbol of a nuclear bomb. When players see five of these symbols of nuclear bombs in an active pay line, receive a jackpot payout of 5,000 coins. The game has some great animations, and when players see these five nuclear bombs, they explode. The wild card is the diver. This is a wild expansion symbol, and when in three reels, coils specific to one, three and five, nature has spread across the reels, and helps to make more winning combination's. The animation of nature shows that the diver diver dropped his barrel that has been made, and then begins to search the ocean.

Online slots players casino always hope for some free spins and nuclear Fishing not disappoint them. The sea horse is the trigger free spins. When three of the Sea Horse symbols on the screen, players receive five free spins. When there are four sea horses on the screen at the same time, players receive 10 free spins. When players are lucky to see five seahorses in the screen at the same time, get 25 free spins. When players are playing your free spins, all prizes have a 3x multiplier.

When three or more symbols appear barrel, players took the barrel bonus game, a bonus game screen second. This is when players have to help clean up the ocean floor for more rewards.

This game is now live at Rival Gaming powered online casinos.

How To Use Thread For Fishing

The whole art of fly tying is literally held together by a thread. Learning how to use the thread should be the first step to understanding of the fly tying.
The tenderloin is the glue that holds together a fly. The understanding of the basic principles of using a coil of TYER of the fly, starting the thread on a hook and on a basic control of the thread is essential to the entire ligation of the fly. Once these principles are understood to use the thread is a beginner well on their way to be able to build durable and attractive flies.
Using the coil of the fly TYER
Central to the whole fly that binds with the deputy and the hook, thread is used throughout the tying of the fly. Control over the thread is realized by the use of a coil of TYER of the fly. The coil allows the coil free TYER thread while performing other tasks during the fly-linking process.
To use the spool a reel of thread is placed between the arms of tension. The weapons of tension can be adjusted by folding over the internal pressure or external pressure to get less. The weapons of tension should be adjusted so that the coil does not spin when the coil is allowed to hang freely during ligation. Too much tension, however, will make it hard for the coil wire and cause the thread to feed erratically when you move.



The thread is inserted in the tube of the thread of the coil by means of a threader of the coil. The threader is a bent portion of wire end attached to a handle. Insert the wire threader in the tip of the tube of the coil so that it protrudes from the end of the tensioning arm. Place the ends of the thread through the wire of the threader and pull the threader from the tube of the coil. The coil is now a loaded and ready to use.
Start the thread on the shank of the hook
If specifically listed or not, requires that every fly to tie the thread is fixed quickly and easily be on the hook. This most often refers to as â € œiniziando the filettoâ € ž. Start the thread can be done using these points.
Keep the thread loose between the index finger and thumb of the left hand material. The hand material refers to the non-dominant hand of TYER. Using the spool of thread in hand, doing a wrap of thread around the shank of the hook. The hand of the thread refers to the dominant hand of TYER which is occupied as often as with the thread and the coil. Make 2-5 successive casings of the thread towards the rear of the hook which covers the first housing of the fillet and slacciar or â € œetichettareâ € ž the end of the thread. This closes the thread on the shank of the hook key. Using scissors cut off the end of editing the thread as close as possible to the junction of the shank of the hook and wraps thread. The thread started on the hour â € OEE gancioâ € ž. Basic control of the thread
While this text is intended to cover all the control functions of the thread that ties in Moscow is a good starting point. Each TYER develops a certain way of treating the thread and materials as they learn and expand in the trade.

Binding patterns of the fly egg: Tips of the fly TYER



The basic control of the thread relates to power move the thread on the hook in a manner well-ordered. The technique mentioned in the fly that binds because â € ž € filettoâ œla base of the drill is an excellent example of practice and learning the basic control of the thread. Once a TYER has learned to apply a base of the thread of a uniform layer of the thread tight other techniques are easier to learn. A base of the thread is implemented as described below.
With the thread started on the hook shank to make the shells and close following of the thread along the shank of the hook to the ultimate point of the finished fly.
Keep the hose close to the coil while the shank of the hook turn around the hook shank. Is rarely a need to have more than 1 - 1 inch between the fly and the tube of the coil.
As the thread provides the gape of the hook (the area between the point of the hook and the shank of the hook) the casings are made of a way to counter with small hooks (sizes 2 and smaller). In the tie on the hooks larger than 2 that the end of the tube coil can be passed with the gape. Do this to avoid contact with the point of the hook. If the thread is put in contact with the point of the hook and moves will be weakened or cut and scratched.
Not everyone but a good percentage of the recipes require a base of the fly as described in the thread. The basic technique is the thread happens once other forms of use of the thread can do.
With practice and persistence a complete understanding of the use of the thread can be achieved. An excellent way to practice the techniques used is the thread tying some basic models and simple to begin with. While the basic models become easier to tie a TYER can move towards more complex pilot models and ligation techniques.

A paradise for fly fishing

Mapuche language, Challhuaquen means "fishing place". Located on the banks of the Futaleufu River, in the National Park Alerces in Chubut, the Challhuaquen Lodge lives up to its name: the Patagonian outpost is a paradise for lovers of fly casting.
Format boutique hotel has six exclusive rooms en suite and is designed for the most demanding fishermen. The outputs in search of trout and salmon are tailored to suit each group of guests, taking into account their preferences, experience and state of the waters.
The property is located on a bluff facing the river, surrounded by the majesty of the mountain ranges of the Andes, the ancient forests and lakes. In summer, the return of a rewarding day of fishing, the facilities you to rest, enjoy a drink or into temptation irresistible mountain SPA with sauna, Jacuzzi, Scottish shower and massage room. In addition to fishing, lodge with special emphasis on the proposal gastronomic Patagonian cuisine with international flavors paired with a selection of the best wineries in Argentina.
The Challhuaquen Lodge offers an all inclusive, both in hotels and in service of fishing. Packages include: transfers between lodge and Esquel airport, accommodation, all meals, Argentine wines, beer and soft drinks, access to the spa with a massage per person per stay. With respect to fisheries, including outings with professional guides, transportation to the fishing areas in 4x4 vehicles or boats, fishing licenses and fishing for beginners, fishing gear: rods, waders and fly casting course.
But all is not fishing. It also offers a varied list of possibilities to enjoy the natural environment of Patagonia. From outdoor activities designed for all ages, such as walking and cycling trips to the lakes, photographic safaris, walks in the landmark railway "Trochita" and parades, all the choices available to the lodge are designed to get the most of the scenery.

Input The wet fly fishing ConMosca

Spanish is the art par excellence. In few countries are implementing this type of fishing and Spain have the best assemblers and fishermen mundo.Antigenicity, wet fly fishing is done with natural insect ...

(Even now there Asturian and Leonese fishermen that are using) and evolved to the use of artificial flies. The earliest references on the use of artificial in our country, dating back to 1624, in which Juan de Bergara wrote a treatise on the rigging and use of artificial flies for trout fishing: The Manuscript of Astorga, with 33 mosquito.

Two systems are used for such fishing: with buldó and rat tail.

Fishery with rat tail, only to mention that is substantially equal to dry fly, with the variant that, generally, decoys usually used nymphs heavier than usual launch mosquitoes and downstream in the direction of flow.
We will focus on fly fishing with buldó drowned, the most widespread, requiring a high precision casting, proper recovery and choice of lures.

The rods vary between 1.8 and 2.8 m. with an action point not too soft to make accurate throws and manage the rig so that it appears that our artificial are living insects.

As for the reels, we can use the same as in the fishing spoon.

The rig consists of a number of mosquitoes that varies between 3 and 5, depending on the stream where we go fishing, bubble attached to a plastic or rubber (We will take into account the current regulations in the section that we will visit, since it can vary depending on both the Autonomous Region, Province and even the Box in which you are).

The main line of the "string" will be from 0.16 to 0.18 hundredths and the gut of a smaller diameter. This will avoid the loss of complete rig a fly when we hook on branches or rocks. The distance between gut is 20 cm. and the length of these 4 cm. closest to buldó (semiahogada), 6 cm. the next (drowned), 8 cm. the third (semisaltona) and 10 cm. the farthest (bulging). The "trail" is the fly or nymph who stays on the buldó outside the main line with a length of 20 cm. This is the case of a gear 5 flies, if we use a gear 4, the length of the gut differ by 3 cm. (4, 7 and 10 cm.) And if it is 3 mosquitoes, the difference is 4 cm. (4 and 8 cm.).

As to buldó, the size will be of 3-5 cm. in diameter and particularly advise the rubber, to hit with stones, do not emit as much noise as the plastic and withstand shock better.
Mosquitoes, saying that a good rule is to start the season with a clarification of insects and go dark as the season progresses, but I advise you take a look at Manuscript Manuscript of Astorga and León.

Most importantly, regardless of a good cast, is the recovery. We will always have to print to rig a rate equal to the current, giving the feeling that the mosquitoes down naturally, with the line slightly tight, not too, so that all the flies do their job, especially the "jumpy" which, as its name suggests, should start to bounce imitation of an insect.

A technique that is being introduced lately in our country and each day has more fans is fishing to "Polish".
This is a very similar way of fishing with nymph fishing with rat tail, but with minor variations. Rods are used slightly longer, 10 to 11 feet with a half action tip. with gear 2 or 3 nymphs, of which one must go very plummet.

Is a catch, which is performed in short because, generally, the sets do not exceed 2 or 3 times the length of the rod. Its effectiveness is amazing and so that, as we said before, more and more fishermen using this technique also has many detractors, we must not forget that essentially no longer a run bottom fishing but gear different from those used in fishing with natural bait.

The bass line has to be adapted to the depth you go fishing lures and the distance should be short (10-12 cm. At most), recalling that one of the nymphs must "swim" as near the end as possible.

How the fly fishing?

The issue of fishing is one of the most healthy, interesting and above all of the most productive for a wide group of people who in one way or another fishing used not only as a means of subsistence but a trade.

One of the techniques commonly used to fish around the world fly fishing, which uses a conventional rod and placed in the same kind of artificial bait with the appearance of a fish-and this is used to capture various kinds of fish. This type of bait is what is called "fly" and is widely used in fisheries not only independent but besides this it is also used in many other fisheries, and in one way or other I think it is a expressions or forms of fishing that most benefit you can get at any given time.
fly fishing

fly fishing

To the extent you have on hand the idea that is basically what you already have in mind to get the most out of everything that has to do with fishing as such is vitally important that you take into account each of the elements that are binding and which are closely related to a number of aspects that go beyond the different techniques of fishing, but you can also get a lot out yourself what that has to do with the way how you can use this technique to your advantage.

Of all the techniques for fishing, fly fishing is one of the most used and I think it's one of the ways how you can begin to take advantage of the same but on all the things you have on hand some aspects are related to fishing in general and besides that you have at hand the information you're looking for in the case of if you want to join this practice of fishing, or you're then doing another type of fishing party.

Besides all the fishing equipment you use as rod, line, support line, reel, fly guide and you must carry the fly. With all this, I am quite sure you're ready to take the fight but above all things is very important that you have on hand all the elements that are must to be able to get the most out of your fishing experience.

If you have questions about whether this technique to fish is right for you, or is the best you can invite you to do this or that, I think you can take into account all aspects that are necessary to be able to get the most advantage of the same but above all, you can understand how this type of fishing technique compared with other techniques.

The History Of Fishing

Life began in water more than 400 million years. Were some microscopic plants which began to feed on other, evolved in animals. It was here where there was already a division of species. Some of these primitive animals evolved to become jellyfish, worms, snails and other invertebrates. The other part developed a backbone giving rise to the first vertebrates: fish. They developed fins and began to breathe through gills (although a small part it was for lungs). Finally, some of the existing fish species came ashore causing, over time, to the great variety of terrestrial species today.
Fish farming today is of great importance, since it is a food rich in proteins, both for animals and for humans. It is also a way to solve problems in generating employment. Venezuela is a country rich in water which has many possibilities for the development and intensification of agricultural production and in this case for fish culture.

     FISH


The fish originated from other chordates to the beginning of the Cambrian. No one knows for certain exactly where to draw their origin, the most primitive group of fish known up to the ostracoderms, from which descended the modern agnathans (which includes the lampreys and mixines).


One of the most important developmental achievements was the development of jaws from gill arches, as primitive fish allowed to feed on larger pieces, capturing prey, crushing. Within the first jawed fish are the placoderms, which appeared towards the end of Silurian. Terrestrial vertebrates diverged from lobe-finned fish, related to the coelacanth or dipnoos.


Aquatic vertebrates are generally ectothermic, covered mostly equipped with scales and fins, which allow movement in the aquatic environment, and gills, which capture the dissolved oxygen in water.

Fish are abundant in both saltwater and fresh water, being able to find species from mountain streams (eg roach) and in the depths of the ocean (eg eels Swallow). The specialty of zoology that deals specifically with fish is called ichthyology. The world of fish has a lot of variety in the forms as they are adapted to swimming, lifestyle and environment in which each species is developed.

Fusiform body shape, the predominant tendency of most fish species, obey the law: maximum swimming speed with minimum energy expenditure, in some however, the fusiform shape may be missing, and is then replaced by a series of morphological adaptations able to compensate for their body shape. The fish are found in all aquatic environments of the world, except those that contain harmful or toxic elements.


Fins: They are fundamental in swimming ability, especially the flow with maintaining stability in the water. The paired fins located on either side of the body are: the pectoral fins (behind the head) and the ventral. The median fins (only one) are the anal, caudal and dorsal. The study of the wings is a good way to identify fish.

The adipose fin (if present) is located just behind the dorsal fin and before the flow characteristic is their lack of bones or radios. Some say that the gonopodium is an example of adipose fin, while others see it as an organ. (All depends on your point of view).

Role of Fins:
The fins have different functions, but all basically serve for locomotion and balance. The caudal fin acts as a kind of rudder and, thanks to the body or the caudal peduncle, is also involved in propulsion. Fish are in great speed is because they have a tail fin crescent-shaped.

The dorsal and anal fins are folded along the body when the fish swims. Its function corresponds to that of the keel of a boat at low speed.

The paired fins help to stabilize the fish when it encentra between two stools. When nothing, these flaps are retracted and also help to slow.

The Scales:
Arranged like tiles on a roof lining skin scales of fish. As the flaps, their shape may serve to differentiate one species from another.

VARIETIES OF FISH IN RIVERS
FRESHWATER
The diversity of fish living in freshwater environments of Venezuela is one of the most important natural heritage features of the country's first known figure on the freshwater fishes of Venezuela was provided by Magus (1970) who indicates 521 species ( 422 primary, 52 secondary and 47 peripheral), Taphorn and colleagues (1997) listed a total of 1,065 species, Lassus and colleagues (2004) present a list of 1,198 species of fish in inland waters of Venezuela, Lassus and colleagues (2005) A total of 995 recorded species of fish to the Orinoco River basin (Colombia and Venezuela). In recent years new species have been described for Venezuela appreciably, which allows us to indicate that we are closer to knowing the exact number of freshwater fish living in Venezuela. Venezuela is the second or third country in the Nontropical region, after Brazil and Colombia very closely in terms of richness of freshwater fish. However, what matters is not the place it occupies in the hierarchy list or honor roll of species richness, but the place it occupies in the commitment to humanity to protect and conserve all species in the country.

The freshwater fishes of Venezuela are divided into seven major river basins: The basin of the Orinoco, Cuyuni River Basin (part of the Essequibo River basin), the Black River Basin (linking the basins of Orinoco and Amazon River), the basin of the Gulf of Praia, Caribbean Sea basin (it may indicate that the main river basins are individuals: Tuy, Tocuyo Aroa, Unare, etc..), the basin of Lake Maracaibo and the Lake of Valencia. Several species are unique or endemic to each basin, but also the species do not live evenly across the basin. Each species is located where the ecological, physiological and historical permits. Thus we have no species native to the Andean foothills, the Guiana Shield and the plains region, but all water bodies in these regions may belong to the great Orinoco River basin.

The freshwater fish can be divided into primary, secondary and peripheral. The so-called primary freshwater fish species are those whose ancestors or similar or related groups also live in fresh water. These species do not tolerate any degree of salinity. The so-called secondary freshwater fish species are those whose ancestors or similar or related groups are in the marine environment.