SILURIFORMES

Jan 18, 2010 Lorenzo Martinez Bernal TORPEDO 0

Catfish is the common name of a 2.200 fish species, of which about 1.200 They are living in South America, where it is also called bagres. Two families are primarily marine, the rest live in freshwater. Most cats are nocturnal scavengers and fish living near the bottom in shallow water.

Cat fish name is derived from the tentacles or wattles, extending on either side of the upper jaw and, in some species, also lower jaw, like a cat's whiskers. The dorsal and pectoral fins are often provided with sharp spines, sometimes poisonous, They used as a defense and can cause serious injuries. Some members of different families of catfishes of America are covered with bony plates crammed under the smooth skin. These catfish have two pairs of chins, very long and very short supplementary; his teeth are tiny and abundant. Some genera Pacific grouping representative species such as coatete, catfish or cat sailor and topsail catfish.

The most common catfish was introduced to Europe from North America and prospered, especially in Central Europe. It has four barbels on the upper jaw and four on the bottom and inhabits slow-flowing rivers. gray cat known as fish. European species, he torpedo o acorn, is the pez largest cat, No information on any specimen that has reached 290 kg and 4 m long. It is characterized as having long wattles in the upper jaw and four shorter in the lower. The anal fin is very long; reaches the flow.

The electric catfish of the Nile River and tropical central Africa is capable of producing electric shock. Another unique cat fish is catfish walker, who is originally from eastern India and Southeast Asia. This species was discovered in 1968, near Boca Raton, in Florida (OF. UU.), imported by traders of tropical fish. Its maximum length is 56 cm . During the dry season the cat 'walking fish’ by flooded land in the rainy season, combining a sliding movement with strong shaking tail. further, introduced into the interior of the earth a powerful spine of each flipper as a pole that propels the fish forward. It is able to breathe through a modification of the branchial arch, forming an air chamber.

Catfish constitute the order Siluriformes. The two marine families are arid and Plotósidos. El coatete eg Galeichthys guatemalensis, Cat Marine catfish or Pacific is Galeichthys felis, topsail catfish is Bagre pinnimaculatus, gray cat fish species Ictalurus nebulosus is, he torpedo o acorn es Silurus glanis, the electric catfish is Malapterurus Electricus and catfish Walker, Clarias batrachus.

It is an order of fish ostariofisos, mostly freshwater, widely distributed and over 2200 species, grouped into 38 familias.Su size is varied, including species from a few centimeters to some of the largest freshwater fish in the world (Silurus glanis, Paulicea sp., Pseudoplatystoma sp., Pangasionodon gigas). Usually fish are benthic, with elongated body, depressed dorsoventrally, lacking or flakes coated plates.