Fish

Fish

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A fish is any member of a paraphyletic group of organisms that consist of all gill-bearing aquatic craniate animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish, as well as various extinct related groups. Most fish are ectothermic ("cold-blooded"), allowing their body temperatures to vary as ambient temperatures change, though some of the large active swimmers like white shark and tuna can hold a higher core temperature. Fish are abundant in most bodies of water. They can be found in nearly all aquatic environments, from high mountain streams (e.g., char and gudgeon) to the abyssal and even hadal depths of the deepest oceans (e.g., gulpers and anglerfish). At 32,000 species, fish exhibit greater species diversity than any other group of vertebrates.

Fish are an important resource for humans worldwide, especially as food. Commercial and subsistence fishers hunt fish in wild fisheries (see fishing) or farm them in ponds or in cages in the ocean (see aquaculture). They are also caught by recreational fishers, kept as pets, raised by fishkeepers, and exhibited in public aquaria. Fish have had a role in culture through the ages, serving as deities, religious symbols, and as the subjects of art, books and movies.

Because the term "fish" is defined negatively, and excludes the tetrapods (i.e., the amphibians, reptiles, birds and mammals) which descend from within the same ancestry, it is paraphyletic, and is not considered a proper grouping in systematic biology. The traditional term pisces (also ichthyes) is considered a typological, but not a phylogenetic classification.

The earliest organisms that can be classified as fish were soft-bodied chordates that first appeared during the Cambrian period. Although they lacked a true spine, they possessed notochords which allowed them to be more agile than their invertebrate counterparts. Fish would continue to evolve through the Paleozoic era, diversifying into a wide variety of forms. Many fish of the Paleozoic developed external armor that protected them from predators. The first fish with jaws appeared in the Silurian period, after which many (such as sharks) became formidable marine predators rather than just the prey of arthropods. [...]

Recipes With Ingredient: Fish

Halibut with Bell Pepper & Tomato Ragu

Pan-Seared Halibut with Tomato Bell Pepper Olive Ragu

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Now, I find a lot of people are freaked out by cooking fish. Really, though, it could not be simpler. ...

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maplesalmon01
tunaspaghetti01

Spaghetti with Tuna, Capers and Fresh Tomatoes

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An easy recipe that is perfect for a quick summer meal.

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gefiltefish01

Gefilte Fish

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One must make a trip to a Jewish style fish monger. Buy 2 pounds of freshly ground Whitefish and remember ...

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salmon01

Seared Atlantic Salmon

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Kosher salt grains are larger than regular table salt grains, when meats are coated in kosher salt the salt does ...

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tunasaladsalad

Tuna Salad, Salad

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tuna_burgers

Tuna Burgers

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Simple and nutritious, these burgers can be made quickly with ingredients on hand. I found this recipe at least twenty years ...

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Salt-fish

Salt Fish

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This salt fish is meant as a topping or side dish for a coconut bake.

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