QueeN Ugly Fisher

King Fisher

2008-05-11T18:56:00.000-07:00

As of 2006, the IUCN Red List describes 1,173 species of fish as being threatened with extinction.[38] Included on this list are species such as Atlantic cod,[39] Devil's Hole pupfish,[40] coelacanths,[41] and great white sharks.[42] Because fish live underwater they are much more difficult to study than terrestrial animals and plants, and information about fish populations is often lacking. However, freshwater fish seem particularly threatened because they often live in relatively small areas. For example, the Devil's Hole pupfish occupies only a single 3 m by 6 m pool.[43]

Overfishing
In the case of edible fishes such as cod and tuna a major threat is overfishing.[44][45] Where overfishing persists, it eventually causes the collapse of the fish population (known as a "stock") because the population cannot breed fast enough to replace the individuals removed by fishing. One well-studied example of the collapse of a fishery is the Pacific sardine Sadinops sagax caerulues fishery off the coast of California. From a peak in 1937 of 790,000 tonnes the amount of fish landed steadily declined to a mere 24,000 tonnes in 1968, at which point the fishery stopped as no longer economically viable. Such commercial extinction does not mean that the fish itself goes extinct, merely that it can no longer sustain a profitable fishery.[46] The main tension between fisheries science and the fishing industry is the need to balance conservation with preserving the livelihoods of fishermen. In places such as Scotland, Newfoundland, and Alaska the fishing industry is a major employer, so governments have a vested interest in finding a balance between conserving fish stocks while maintaining an economic level of commercial fishing.[47][48] On the other hand, scientists and conservations push for increasingly stringent protection for fish stocks, warning that many stocks could be wiped out within fifty years.[49][50]

Habitat destruction
A key stress on both freshwater and marine ecosystems is habitat degradation including water pollution, the building of dams, removal of water for use by humans, and the introduction of exotic species.[51] An example of a fish that has become endangered because of habitat change is the pallid sturgeon, a North American freshwater fish that living in rivers that have all been changed by human activity in a variety of different ways.[52]

Exotic species
Introduction of exotic species has occurred in a variety of places and for many different reasons. One of the best studied (and most severe) examples was the introduction of Nile perch into Lake Victoria. Since the 1960s the Nile perch gradually exterminated the 500 species of cichlid fishes found only in this lake and nowhere else. Some species survive now only in captive breeding programmes, but others are probably extinct.[53] Carp, snakeheads,[54] tilapia, European perch, brown trout, rainbow trout, and sea lampreys are other examples of fish that have caused problems by being introduced into alien environments
Although most fish are exclusively aquatic and ectothermic, there are exceptions to both cases. Fish from a number of different groups have evolved the capacity to live out of the water for extended periods of time. Of these amphibious fish, some such as the mudskipper can live and move about on land for up to several days.
Also, certain species of fish maintain elevated body temperatures to varying degrees. Endothermic teleosts (bony fishes) are all in the suborder Scombroidei and include the billfishes, tunas, and one species of "primitive" mackerel (Gasterochisma melampus). All sharks in the family Lamnidae – shortfin mako, long fin mako, white, porbeagle, and salmon shark – are known to have the capacity for endothermy, and evidence suggests the trait exists in family Alopiidae (thresher sharks). The degree of endothermy varies from the billfish, which warm only their eyes and brain, to bluefin tuna and porbeagle sharks who maintain body temperatures elevated in excess of 20 °C above ambient water temperatures. See also gigantothermy. Endothermy, though metabolically costly, is thought to provide advantages such as increased contractile force of muscles, higher rates of central nervous system processing, and higher rates of digestion.

Diseases
Like other animals, fish can suffer from a wide variety of diseases and parasites. To prevent disease they have a variety of non-specific defences and specific defences. Non-specific defences include the skin and scales, as well as the mucus layer secreted by the epidermis that traps microorganisms and inhibits their growth. Should pathogens breach these defences, fish can develop an inflammatory response that increases the flow of blood to the infected region and delivers the white blood cells that will attempt to destroy the pathogens. Specific defences are specialised responses to particular pathogens recognised by the fish's body, in other words, an immune response.[33] In recent years, vaccines have become widely used in aquaculture and also with ornamental fish, for example the vaccines for furunculosis in farmed salmon and koi herpes virus in koi.[34][35]
Some fish will also take advantage of cleaner fish for removal of external parasites. The best known of these are the Bluestreak cleaner wrasses of the genus Labroides found on coral reefs in the Indian Ocean and Pacific Ocean. These small fish maintain so-called "cleaning stations" where other fish, known as hosts, will congregate and perform specific movements to attract the attention of the cleaner fish.[36] Cleaning behaviours have been observed in a number of other fish groups, including an interesting case between two cichlids of the same genus, Etroplus maculatus, the cleaner fish, and the much larger Etroplus suratensis, the host.[37

A random assemblage of fishes merely using some localised resource such as food or nesting sites is known simply as an aggregation. When fish come together in an interactive, social grouping, then they may be forming either a shoal or a school depending on the degree of organisation. A shoal is a loosely organised group where each fish swims and forages independently but is attracted to other members of the group and adjusts its behaviour, such as swimming speed, so that it remains close to the other members of the group. Schools of fish are much more tightly organised, synchronising their swimming so that all fish move at the same speed and in the same direction. Shoaling and schooling behaviour is believed to

The term "fish" is most precisely used to describe any non-tetrapod chordate, (i.e., an animal with a backbone), that has gills throughout life and has limbs, if any, in the shape of fins.[1] Unlike groupings such as birds or mammals, fish are not a single clade but a paraphyletic collection of taxa, including hagfishes, lampreys, sharks and rays, ray-finned fishes, coelacanths, and lungfishes.[2][3]
A typical fish is ectothermic; has a streamlined body that allows it to swim rapidly; extracts oxygen from the water using gills or an accessory breathing organ to enable it to breath atmospheric oxygen; has two sets of paired fins, usually one or two (rarely three) dorsal fins, an anal fin, and a tail fin; has jaws; has skin that is usually covered with scales; and lays eggs that are fertilized internally or externally.

Fish come in many shapes and sizes. This is a sea dragon, a close relative of the seahorse. Their leaf-like appendages enable them to blend in with floating seaweed
To each of these there are exceptions. Tuna, Swordfish, and some species of sharks show some warm-blooded adaptations, and are able to raise their body temperature significantly above that of the ambient water surrounding them.[4] Streamlining and swimming performance varies from highly streamlined and rapid swimmers which are able to reach 10-20 body-lengths per second (such as tuna, salmon, and jacks) through to slow but more maneuverable species such as eels and rays that reach no more than 0.5 body-lengths per second.[5] Many groups of freshwater fish extract oxygen from the air as well as from the water using a variety of different structures. Lungfish have paired lungs similar to those of tetrapods, gouramis have a structure called the labyrinth organ that performs a similar function, while many catfish, such as Corydoras extract oxygen via the intestine or stomach.[6] Body shape and the arrangement of the fins is highly variable, covering such seemingly un-fishlike forms as seahorses, pufferfish, anglerfish, and gulpers. Similarly, the surface of the skin may be naked (as in moray eels), or covered with scales of a variety of different types usually defined as placoid (typical of sharks and rays), cosmoid (fossil lungfishes and coelacanths), ganoid (various fossil fishes but also living gars and bichirs, cycloid, and ctenoid (these last two are found on most bony fish.[7] There are even fishes that spend most of their time out of water. Mudskippers feed and interact with one another on mudflats and are only underwater when hiding in their burrows.[8] The catfish Phreatobius cisternarum lives in underground, phreatic habitats, and a relative lives in waterlogged leaf litter.[9][10]
Fish range in size from the 16 m (51 ft) whale shark to the 8 mm (just over ¼ of an inch) long stout infantfish.
Many types of aquatic animals commonly referred to as "fish" are not fish in the sense given above; examples include shellfish, cuttlefish, starfish, crayfish and jellyfish. In earlier times, even biologists did not make a distinction - sixteenth century natural historians classified also seals, whales, amphibians, crocodiles, even hippopotamuses, as well as a host of aquatic invertebrates, as fish[11]. In some contexts, especially in aquaculture, the true fish are referred to finfish to distinguish them from these other animals

For other uses, see Fish (disambiguation).
Fish are aquatic vertebrates that are typically ectothermic (previously cold-blooded), covered with scales, and equipped with two sets of paired fins and several unpaired fins. Fish are abundant in the sea and in fresh water, with species being known from mountain streams (e.g., char and gudgeon) as well as in the deepest depths of the ocean (e.g., gulpers and anglerfish). They are of tremendous importance as food for people around the world, either collected from the wild (see fishing) or farmed in much the same way as cattle or chickens (see aquaculture). Fish are also exploited for recreation, through angling and fishkeeping, and are commonly exhibited in public aquaria. Fish have an important role in many cultures through the ages, ranging as widely as deities and religious symbols to subjects of books and popular movies

Fish are a paraphyletic group: that is, any clade containing all fish also contains the tetrapods, which are not fish. For this reason, groups such as the "Class Pisces" seen in older reference works are no longer used in formal classifications.
Fish are classified into the following major groups:
Subclass Pteraspidomorphi (early jawless fish)
Class Thelodonti
Class Anaspida
(unranked) Cephalaspidomorphi (early jawless fish)
(unranked) Hyperoartia
Petromyzontidae (lampreys)
Class Galeaspida
Class Pituriaspida
Class Osteostraci
Infraphylum Gnathostomata (jawed vertebrates)
Class Placodermi (armoured fishes, extinct)
Class Chondrichthyes (cartilaginous fish)
Class Acanthodii (spiny sharks, extinct)
Superclass Osteichthyes (bony fish)
Class Actinopterygii (ray-finned fish)
Class Sarcopterygii (lobe-finned fish)
Subclass Coelacanthimorpha (coelacanths)
Subclass Dipnoi (lungfish)
Some palaeontologists consider that Conodonta are chordates, and so regard them as primitive fish. For a fuller treatment of classification, see the vertebrate article.
The various fish groups taken together account for more than half of the known vertebrates. There are almost 28,000 known extant species of fish, of which almost 27,000 are bony fish, with the remainder being about 970 sharks, rays, and chimeras and about 108 hagfishes and lampreys.[12] A third of all of these species are contained within the nine largest families; from largest to smallest, these families are Cyprinidae, Gobiidae, Cichlidae, Characidae, Loricariidae, Balitoridae, Serranidae, Labridae, and Scorpaenidae. On the other hand, about 64 families are monotypic, containing only one species. It is predicted that the eventual number of total extant species will be at least 32,500.[13]

Holiday Fish

2008-05-11T02:31:00.000-07:00

This picture shows a young male Green Terror about 2.5" inches long. His fins are longer than the fins of a female his size, and he has brighter colors than a female the same size.

Here is another picture of the same Red Devil, and in this picture you can see the bump on his head and his long pointed fish.

This is a picture of a beautiful large male Red Devil.

Here is another picture of the same Red Devil, and in this picture you can see the bump on his head and his long pointed fins.

Soon the young male Green Terror shown above will start to grow a bump on his head like the bump on the head of the Red Devil shown just above. A male Neotropical Cichlid often grows long fins and a bump on his head. The picture of the Green Terror was taken in our facility by TBK. The pictures of the Red Devil were taken by William W. of Michigan.

Sometimes these fish appear in books and other websites under more than one name, and that is why we show more than one name in the table. A living organism can really only have one scientific name at one time, but the correct names can change as scientists learn more about the fish or the history of its scientific name.
In the table above the upper scientific name is the older name, and the lower scientific name is the more recent revision. You can see that the genus Cichlasoma is apparently being split into Archocentrus, Heros, Thoricthys, Nandopsis, and other names that are not listed in this table.
The maximum sizes are not really the maximum. I have occasionally seen specimens of each of these fish that are bigger than the sizes listed as the maximum in the above table. But fish of the sizes listed would be considered very big for that species.
Fish like these Neotropical Cichlids continue to grow their entire lives. Mammals like dogs and cats grow to their maximum size within a few years, stay at that size for several years, then often decrease in size the last few years of their lives. But Neotropical Cichlids continue to grow for their entire lives. So the term maximum size is a bit more vague when applied to these fish.
The sizes listed above should be an important guide when buying fish. Be sure you are committed to providing the fish you buy with an appropriate home. Each of these fish will eventually need a big aquarium.

OnE LuCkY FiSh

2008-05-01T09:31:00.000-07:00

A robotic fish developed by scientists from Essex University is put through its paces in a special tank at the London Aquarium. It works via sensors and has autonomous A robotic fish developed by scientists from Essex University is put through its paces in a special tank at the London Aquarium. It works via sensors and has autonomous navigational control.www.itnsource.com (more) (less) Betta splendens, the Siamese Fighting Fish
Fotoshow about the behavior of this beautiful Labyrinth Fish by Dr. Jörg Vierke...Betta splendens Siamese Fighting Fish Fightingfish Vierke Labyrinth Labyrinthfish Fotoshow

little yellow fish
Little yellow fish I edited. It's a little yellow fish karaoke... like i'm a little yellow or it's actually called "Help! I Little yellow fish I edited. It's a little yellow fish karaoke... like i'm a little yellow or it's actually called "Help! I'm a fish" by The Little Trees....And I used Shackred's Lisbon Deep Blue Sea yellow fish in an aquarium (more) (less) Pink Fish
don't own these pictures I found them on the web and thought they were cool so heres pink fish's story...Pink Fish Love U2 Twain
The Pink Fish Show gives the media world something new to chew on. As today's television continues on its unending decay, this show keeps life on its toes The Pink Fish Show gives the media world something new to chew on. As today's television continues on its unending decay, this show keeps life on its toes. It starts off a little slow. (more) (less)
fly-fishing? How is it different from bait casting or fishing with lures?...beginner beginner's beginning novice fly fishing guide instruction lesson how to fish
PETS] Silver AROWANA Fish
The Arowana or Silver Arowana is a long fish with lithe fluid swimming motion that makes it seems almost snakelike. It has large opalescent scales that reflect blue, The Arowana or Silver Arowana is a long fish with lithe fluid swimming motion that makes it seems almost snakelike. It has large opalescent scales that reflect blue, red, and green highlights as the fish grows older. The mouth is at the top of the body and opens in three pieces. "The Arowana gives us a view of our ancient prehistoric world, the world during the Jurassic age. The Arowana is one of only a few living examples of this group." (more) (less)
Green Terror Attack
Black Convict enters into the Green Terror's space, the Green Terror attacks. My next video will be of him attacking and eating other fish. I'll Green Terror Attack on Black Convict. This Green Terror is a real builder. Everytime I smooth out the gravel, he rearranges the landscape. These are South American Ciclids. They are very territorial. Notice that as soon as the Black Convict enters into the Green Terror's space, the Green Terror attacks. My next video will be of him attacking and eating other fish. I'll need to go to the pet store to buy some feeder fish. It'll be a feeding frenzy. (more) (less)

maroon clownfish saltwater fish
maroon clownfish saltwater fish...maroon clownfish saltwater fish hung doan

QueeN FisHeR

2008-05-01T09:26:00.000-07:00

Perempuan Hodoh