Category: Biology | Systematics

Classification of Cypriniformes

Fishes of Cypriniformes

Fishes of Cypriniformes

Cypriniformes is an enormously successful group of freshwater fishes. This order contains 3000 or so species, divided into main three lines of development- the characins-piranhas and their relatives- from Central to South American and Africa; the electric eels from tropical and subtropical …read more

Category: Biology | Systematics

Nomenclature of Bangladesh National Fish Hilsa

Photograph shows Spotted Ilish Tenualosa ilisha (Sri Lankan hilsa) [A], National fish of Bangladesh Hilsa ilisha (adult) [B] and Hilsa ilisha, Jatka (Juvenile) [C] Fig-1: Photograph shows Spotted Ilish Tenualosa ilisha (Sri Lankan hilsa) [A”], National fish of Bangladesh …read more

Category: Biology | Morphology

Air-Breathing Organ of Fishes: Swim Bladder or Air Bladder

Dissected photo of Notopterus chitala showing the air-breathing swimbladder

Dissected photo of Notopterus chitala showing the air-breathing swimbladder

Description: The airbladder or gasbladder or swimbladder is a white glistering saccular organ developing as a diverticulum form the wall of the pharynx in the gut. It is often present among the teleosts. It attains its full development among the spiny-rayed teleosts, …read more