Big mouth catfish

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Big mouth catfish
Chaca bankanensis, drawing from the first description by Pieter Bleeker.

Chaca bankanensis , drawing from the first description by Pieter Bleeker .

Systematics
Overcohort : Clupeocephala
Cohort : Otomorpha
Sub-cohort : Ostariophysi
Order : Catfish (Siluriformes)
Family : Chacidae
Genre : Big mouth catfish
Scientific name of the  family
Chacidae
Bleeker , 1858
Scientific name of the  genus
Chaca
Gray , 1831

The big mouth catfish (Chacidae) are a family of fish from the order of the catfish-like (Siluriformes). It includes only one genus ( Chaca ) with four species . These are found in East India , Bangladesh , Nepal , the Malay Peninsula and Indonesia . Big mouth catfish use their barbels on their upper jaws to lure prey fish near their mouths.

features

Big mouth catfish are small fish that are no more than 24 centimeters long. Its head is very large, flattened and almost square when viewed from above. The terminal mouth is very broad and surrounded by a fringe of beard-like appendages and three or four pairs of real barbels , of which the nasal ones, if any, are very small. The eyes are on the top of the head and are small. The body is strongly flattened laterally , especially behind the anal fin . The lateral line is complete and accentuated by a papillary ridge running from the gill cover to the caudal fin. The dorsal fin has a strong hard ray and four soft rays. The adipose fin is designed as a flat ridge that merges into the caudal fin . The hard steel of the pectoral fins is clearly serrated, followed by four or five soft rays. The pelvic fins are large and have six soft rays. The anal fin is short and has only eight to ten rays. A gill trap is not developed. The number of Branchiostegal rays is six to eight.

Systematics

The family includes a genus with four species :

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