Ctenopharyn godon idella
Phylum: Chordata
Class: Actinopterygii
Order: Cypriniformes
Family: Cyprinidae
Subfamily: Leuciscinae
Genus: Ctenopharyngodon
Steindachner, 1866
Grass carp have elongated, chubby, torpedo-shaped body forms. The terminal mouth is slightly oblique with non-fleshy, firm lips, and no barbels.[3] The complete lateral line contains 40 to 42 scales. Broad, ridged, pharyngeal teeth are arranged in a 2, 4-4, 2 formula. The dorsal fin has eight to 10 soft rays, and the anal fin is set closer to the tail than most cyprinids. Body color is dark olive, shading to brownish-yellow on the sides, with a white belly and large, slightly outlined scales.
The grass carp grows very rapidly. Young fish stocked in the spring at 20 cm (7.9 in) will reach over 45 cm (18 in) by fall. The average length is about 60–100 cm (24–39 in). The maximum length is 1.4 m (4.6 ft) and they grow 40 kg (88 lbs). The grass carps maximum weight is 99 lbs. According to one study, they live an average of five to 9 years, with the oldest surviving 11 years.[4] They eat up to three times their own body weight daily. They thrive in small lakes and backwaters that provide an abundant supply of freshwater vegetation.[citation nee
Cyprinus carpio
Phylum: Chordata
Class: Actinopterygii
Order: Cypriniformes
Family: Cyprinidae
Genus: Cyprinus
Species: C. carpio
Body elongated and somewhat compressed. Lips thick. Two pairs of barbels at angle of mouth, shorter ones on the upper lip. Dorsal fin base long with 17-22 branched rays and a strong, toothed spine in front; dorsal fin outline concave anteriorly. Anal fin with 6-7 soft rays; posterior edge of 3rd dorsal and anal fin spines with sharp spinules. Lateral line with 32 to 38 scales. Pharyngeal teeth 5:5, teeth with flattened crowns. Colour variable, wild carp are brownish-green on the back and upper sides, shading to golden yellow ventrally. The fins are dusky, ventrally with a reddish tinge. Golden carp are bred for ornamental purposes.
Hilsa ilisha
Phylum: Chordata
Class: Actinopterygii
Order: Clupeiformes
Family: Clupeidae
Subfamily: Alosinae
Genus: Tenualosa
Species: T. ilisha
The fish is marine; freshwater; brackish; pelagic-neritic; anadromous ; depth range ? - 200 m. Within a tropical range; 34°N - 5°N, 42°E - 97°E in marine and freshwater. It can grow up to 60 cm in length with weights of up to 3 kg. It is found in rivers and estuaries in Bangladesh, India, Pakistan, Burma and the Persian Gulf area where it can be found in the Tigris and Euphrates rivers in and around Iran and Iraq.[3] It has no dorsal spines but 18 - 21 Dorsal soft rays and anal soft rays. The belly has 30 to 33 scutes. There is a distinct median notch in upper jaw. Gill rakers fine and numerous, about 100 to 250 on lower part of arch and the fins are hyaline. The fish shows a dark blotch behind gill opening, followed by a series of small spots along the flank in juveniles. Color in life, silver shot with gold and purple. The species filter feeds on plankton and by grubbing muddy bottoms.[4]The fish schools in coastal waters and ascends up the rivers (anadromous)for around 50 – 100 km to spawn during the South West monsoons (June to September) and also in January to March . The young fish returning to the sea are known in Bangladesh as jatka, which includes any ilish fish up to 9 inches long.
Anguilla anguilla
Phylum: Chordata
Class: Actinopterygii
Order: Anguilliformes
Family: Anguillidae
Genus: Anguilla
Species: A. anguilla
1. The appearance of European eels varies greatly depending on life stages.
2. European eels are small, leaflike, and transparent.
3. After metamorphosing into the silver stage, European eels appear silvery in colour with elongated dorsal and anal fins that are continuous with the caudal fin.
4. European eels develop enlarged eyes, lose their ability to feed, and turn green, yellow or brownish in clolor.
5. Female eels are generally substantially larger than males.