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The thresher sharks have an extreme example of this tail in which the upper lobe has evolved into a weapon for stunning prey. Bottom-dwelling sharks such as catsharks and carpet sharks have tails with long upper lobes and virtually no lower lobe. The upper lobe is held at a very low angle, which sacrifices speed for maneuverability.
The shark catfishes form the family Pangasiidae.They are found in fresh and brackish waters across southern Asia, from Pakistan to Borneo. [1] Among the 30-odd members of this family is the plant-eating, endangered Mekong giant catfish Pangasianodon gigas, one of the largest known freshwater fish. [1]
Distinctively, these fish have no jaws. [15] Cartilaginous fish such as sharks also have simple, and presumably primitive, skull structures. The cranium is a single structure forming a case around the brain, enclosing the lower surface and the sides, but always at least partially open at the top as a large fontanelle.
The Tete sea catfish (Ariopsis seemanni) or Colombian shark catfish is a species of sea catfish in the family Ariidae, native to Pacific-draining rivers and estuaries in Central and South America. [ 1 ]
In fish anatomy and turtle anatomy, a barbel is a slender, whiskerlike sensory organ near the mouth (sometimes called whiskers or tendrils). Fish that have barbels include the catfish , the carp , the goatfish , the hagfish , the sturgeon , the zebrafish , the black dragonfish and some species of shark such as the sawshark .
Iridescent sharks originate from the large rivers Chao Phraya and Mekong in Asia, though they have been introduced into other rivers for aquaculture. They are a freshwater fish that natively live in a tropical climate and prefer water with a 6.5–7.5 pH, a water hardness of 2.0–29 dGH, and a temperature range of 22–26 °C (72–79 °F). [7]
Italian fisherman Dino Ferrari caught a 280-lb. Wels Catfish Thursday in Italy's Po Delta river, setting a new record. The U.K. Mirror reported that the catch is the world's largest wels catfish ...
A small number of freshwater fish cyprinids and catfish (which are bony fish and thus quite unrelated to sharks) are also commonly called "freshwater sharks", "sharkminnows" or simply "sharks", particularly in the aquarium fish trade: Balantiocheilos melanopterus – Bala shark, tricolor shark, silver shark; Epalzeorhynchos – typical ...