The denticle herring is a small, up to 15 cm (5.9 in) long, species of ray-finned fish found only in the rivers of Benin, Nigeria, and western Cameroon. It is related to the herrings, but notable for its large anal fin and its array of denticle-like scales under the head, which give it almost a furry appearance.
The Ganges shark is a critically endangered species of requiem shark found in the Ganges River and the Brahmaputra River of India and Bangladesh. It is often confused with the more common bull shark, which also inhabits the Ganges River and is sometimes incorrectly referred to as the Ganges shark. The genus is currently considered to contain three recent species; genetic evidence has shown that both the Borneo river shark and Irrawaddy river shark should be regarded as synonyms of the Ganges shark, expanding the range of the species to Pakistan, Myanmar, Borneo, and Java. While the other members of the genus Glyphis occur in coastal marine waters as well as rivers, the Ganges shark is found only in fresh water, making it the world's only exclusively freshwater shark. The species remains poorly known and very rare.
The Eurasian otter, also known as the European otter, Eurasian river otter, European river otter, common otter, and Old World otter, is a semiaquatic mammal native to Eurasia and the Maghreb. The most widely distributed member of the otter subfamily (Lutrinae) of the weasel family (Mustelidae), it is found in the waterways and coasts of Europe, many parts of Asia, and parts of northern Africa. The Eurasian otter has a diet mainly of fish, and is strongly territorial. It is endangered in some parts of its range, but is recovering in others.
The rohu, rui, ruhi or roho labeo is a species of fish of the carp family, found in rivers in South Asia. It is a large omnivore and extensively used in aquaculture.
The Barca snakehead is a rare species of snakehead. It is endemic to the upper Brahmaputra River basin in northeastern India and Bangladesh. Records from Nepal are of doubtful validity. Overall it has been assessed as data deficient by the IUCN, and in 2014 it was assessed as critically endangered in Bangladesh by the IUCN. In Assam, it is locally known as cheng garaka or garaka cheng.
The broad whitefish is a freshwater whitefish species. Dark silvery in colour, and like a herring in its shape. Its distinctive features includes: a convex head, short gill rakers, and a mild overbite. It is found in the Arctic-draining streams, lakes, and rivers of far eastern Russia and North America. Its prey includes larval insects, snails, and shellfish. It is eaten by humans and brown bears.
The flathead grey mullet is an important food fish species in the mullet family Mugilidae. It is found in coastal temperate, tropical and subtropical waters worldwide. Its length is typically 30 to 75 centimetres. It is known with numerous English names, including the flathead mullet, striped mullet, black mullet, bully mullet, common mullet, grey mullet, sea mullet and mullet, among others.
The Burmese bamboo shark, Chiloscyllium burmensis, is an extremely rare bamboo shark in the family Hemiscylliidae. The first specimen was caught in 1963 off the coast from Rangoon in Myanmar in a depth of 29 – 33 m. This holotype is an adult male, 57 cm long and kept in the National Museum of Natural History, Smithsonian Institution, Washington DC. Later, three more specimens, two males and one female, were recorded in 2018 from the Bangladesh Fisheries Development Corporation Fish Landing Center of Cox’s Bazar.
The smooth-coated otter is a freshwater otter species from regions of South and Southwest Asia, with the majority of its numbers found in Southeast Asia. It has been ranked as "vulnerable" on the IUCN Red List since 1996, as it is threatened by habitat loss, pollution of wetlands and poaching for the illegal wildlife trade. As the common name indicates, its fur is relatively smooth, and somewhat shorter in length than that of other otter species.
The dwarf sturgeon, little shovelnose sturgeon, or small Amu-Darya shovelnose sturgeon is a species of fish in the family Acipenseridae. It is found in Turkmenistan, Uzbekistan and probably in Tajikistan.
A Regional Red List is a report of the threatened status of species within a certain country or region. It is based on the IUCN Red List of Threatened Species, an inventory of the conservation status of species on a global scale. Regional Red Lists assess the risk of extinction to species within a political management unit and therefore may feed directly into national and regional planning. This project is coordinated by the Zoological Society of London, the World Conservation Union (IUCN) and partners in national governments, universities and organizations throughout the world.
Oreichthys cosuatis is a small cyprinid fish found in India and Bangladesh.In India it is found along the ganga and brahmaputra river drainage in the states of West bengal and odisha It is also reported from Thailand and Myanmar.
Rita rita is a species of bagrid catfish that is found across southern Asia. It has been recorded in Afghanistan, Bangladesh, India, Myanmar, Nepal and Pakistan. It is one of the giants of its genus, growing a length of 150 cm. It is commercially fished for human consumption.
Gymnostomus ariza, the Reba or ariza labeo, is a cyprinid fish found in India, Nepal, Bangladesh, Afghanistan, and Pakistan.
The olive barb is a species of cyprinid fish native to Afghanistan, India, Nepal, Bangladesh, Pakistan, Bhutan, Sri Lanka, Thailand and Myanmar. This species can reach a length of 42 centimetres (17 in) TL. It is of minor importance to local commercial fisheries and sought as a gamefish. It is popular in Bangladesh but unpopular in the aquarium trade. Adults occur in rivers, streams, lakes and backwaters. Tolerant of salinity. They form schools in groups of four or five to several dozens. Feed on aquatic insects, fish, algae and shrimps. Spawn in running waters among submerged boulders and vegetation. Small fish have limited demand in the aquarium trade.
The mrigal carp, also known as the white carp, is a species of ray-finned fish in the carp family. Native to streams and rivers in India, the only surviving wild population is in the Cauvery River, leading to its IUCN rating as vulnerable. It is widely aquafarmed, and introduced populations exist outside its native range. It reaches a maximum length of 1 m (3.3 ft). This species and Cirrhinus mrigala are considered distinct.
Gudusia is a genus of freshwater ray-finned fishes belonging to the family Dorosomatidae, the gizzard shads and sardinellas. The fishes in this genus are found in rivers in southern Asia.
The longfin snake-eel is an eel in the family Ophichthidae. It was described by John Richardson in 1848. It has a Dorsal fin beginning above its pectoral fin with a snake-like upper body which is cylindrical, but compressed only along its extreme tail tip. It also has a tubular nostril in front and a nostril along lower edge of the lip in back. Colors range from grey to black to brown. Large longfin snake-eels have wrinkled skin.
The corsula is a species of ray-finned fish from the mullet family Mugilidae. It is found in the rivers and estuaries of southern Asia, in India, Bangladesh, Nepal and Myanmar. It is presently regarded as the only species in the monospecific genus Rhinomugil.
Hail Haor Wildlife Sanctuary is a major wildlife sanctuary in Bangladesh. It is one of the most important wetlands in the Sylhet Basin for the resident and migratory waterfowls. It is also important watersource for the inhabitants living around when all other sources dry up during summer. The sanctuary is located in Moulvibazar District, in the northeast region of the country.
