A tuna is a saltwater fish that belongs to the tribe Thunnini, a subgrouping of the Scombridae (mackerel) family. The Thunnini comprise 15 species across five genera, the sizes of which vary greatly, ranging from the bullet tuna up to the Atlantic bluefin tuna. The Atlantic bluefin averages 2 m (6.6 ft), and is believed to live up to 50 years.
Herring are forage fish, mostly belonging to the family Clupeidae.
Lake Victoria is one of the African Great Lakes. Though having multiple local language names, the lake was renamed after Queen Victoria by the explorer John Hanning Speke, the first Briton to document it in 1858, while on an expedition with Richard Francis Burton.
Lake Tanganyika is an African Great Lake. It is the second-oldest freshwater lake in the world, the second-largest by volume, and the second-deepest, in all cases after Lake Baikal in Siberia. It is the world's longest freshwater lake. The lake is shared between four countries—Tanzania, the Democratic Republic of the Congo (DRC), Burundi, and Zambia, with Tanzania (46%) and DRC (40%) possessing the majority of the lake. It drains into the Congo River system and ultimately into the Atlantic Ocean.
"Sardine" and "pilchard" are common names for various small, oily forage fish in the herring family Clupeidae. The term "sardine" was first used in English during the early 15th century and may come from the Mediterranean island of Sardinia, around which sardines were once abundant.
Paddlefish are basal Chondrostean ray-finned fish. They have been referred to as "primitive fish" because they have evolved with few morphological changes since the earliest fossil records of the Early Cretaceous, 120 to 125 million years ago. Polyodontids are almost exclusively North American and Chinese, both extant and in the fossil record.
The rohu, rui, 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 Atlantic sturgeon is a member of the family Acipenseridae and along with other sturgeon it is sometimes considered a living fossil. The Atlantic sturgeon is one of two subspecies of A. oxyrinchus, the other being the Gulf sturgeon. The main range of the Atlantic sturgeon is in eastern North America, extending from New Brunswick, Canada, to the eastern coast of Florida, United States. A disjunct population occurs in the Baltic region of Europe. The Atlantic sturgeon was in great abundance when the first European settlers came to North America, but has since declined due to overfishing, water pollution, and habitat impediments such as dams. It is considered threatened, endangered, and even locally extinct in many of its original habitats. The fish can reach 60 years of age, 15 ft (4.6 m) in length and over 800 lb (360 kg) in weight.
The Arulius barb is a tropical cyprinid fish native to the Kaveri River basin of south east India. Other common names include Tamiraparani barb, Silas barb and longfin barb.
The mottled eel, also known as the African mottled eel, the Indian longfin eel, the Indian mottled eel, the long-finned eel or the river eel, is a demersal, catadromous eel in the family Anguillidae. It was described by John McClelland in 1844. It is a tropical, freshwater eel which is known from East Africa, Bangladesh, Andaman Islands, Mozambique, Malawi, Sri Lanka, Sumatra, and Indonesia and recently from Madagascar. The eels spend most of their lives in freshwater at a depth range of 3–10 metres, but migrate to the Indian Ocean to breed. Males can reach a maximum total length of 121 centimetres and a maximum weight of 7,000 grams. The eels feed primarily off of benthic crustaceans, mollusks, finfish and worms.
The starry sturgeon also known as stellate sturgeon or sevruga, is a species of sturgeon. It is native to the Black, Azov, Caspian and Aegean sea basins, but it has been extirpated from the last and it is predicted that the remaining natural population will follow soon due to overfishing.
The silver distichodus is a species of fish in the family Distichodontidae. It is found in the Congo River basin in Africa.
Distichodus petersii is a species of fish in the family Distichodontidae. It is endemic to Tanzania. Its natural habitat is rivers.
Distichodus is a genus of freshwater fish in the family Distichodontidae found in Africa.
Synodontis rufigiensis is a species of upside-down catfish endemic to Tanzania where it is found in the Rufiji River basin. This species grows to a length of 23 centimetres (9.1 in) TL.
The Black Sea salmon is a fairly small species of salmon, at about 20 inches (510 mm) long on average and rarely reaching over 30 in (760 mm). It inhabits the northern Black Sea coasts and inflowing rivers. There are anadromous, lacustrine and resident river populations. This fish is a close relative of the brown trout. While it is the only native species of Salmo present in the northern Black Sea basin, it may hybridize with (introduced) brown trout in the major rivers. Sea-run populations are currently at low numbers, but the resident river stocks are doing well.
Dawkinsia assimilis is a species of ray-finned fish in the genus Dawkinsia. It is endemic to the southern Western Ghats especially to the Southwest Indian states of Karnataka and Kerala. They are known as Mascara Barb. Filament barbs are a group of small freshwater fishes found in the rivers of peninsular India and Sri Lanka. There are nine species known under the genus Dawkinsia. These barbs are popular among aquarium hobbyists as an ornamental fish and are also collected from rivers and bred for trade.
The Japanese sturgeon, or Amur sturgeon is a species of fish in the family Acipenseridae found in the Amur River basin in China and Russia. Claims of its presence in the Sea of Japan need confirmation. The species has 11–16 dorsal, 34–47 lateral, and 7–16 ventral scutes. Their dorsal fins have 38–53 rays and 20–35 anal fin rays. They also have greyish-brown backs and pale ventral sides. The species could reach up to 3 m (9.8 ft) in length, and weight over 190 kg. The species is considered to be critically endangered.
