Fish migration is mass relocation by fish from one area or body of water to another. Many types of fish migrate on a regular basis, on time scales ranging from daily to annually or longer, and over distances ranging from a few metres to thousands of kilometres. Such migrations are usually done for better feeding or to reproduce, but in other cases the reasons are unclear.
The European eel is a species of eel. They are critically endangered due to hydroelectric dams, overfishing by fisheries on coasts for human consumption, and parasites.
The golden perch is a medium-sized, yellow or gold-coloured species of Australian freshwater fish found primarily in the Murray-Darling River system, though a subspecies is found in the Lake Eyre-Cooper Creek system, and another subspecies, suspected to be ancestral to all other populations, is found in the Fitzroy River system in Queensland. Other common names for golden perch are "goldens", “yellowbelly” and "callop", the last generally used only in South Australia.
A freshwater prawn farm is an aquaculture business designed to raise and produce freshwater prawns or shrimp1 for human consumption. Freshwater prawn farming shares many characteristics with, and many of the same problems as, marine shrimp farming. Unique problems are introduced by the developmental life cycle of the main species.
Macrobrachium rosenbergii, also known as the giant river prawn or giant freshwater prawn, is a commercially important species of palaemonid freshwater prawn. It is found throughout the tropical and subtropical areas of the Indo-Pacific region, from India to Southeast Asia and Northern Australia. The giant freshwater prawn has also been introduced to parts of Africa, Thailand, China, Japan, New Zealand, the Americas, and the Caribbean. It is one of the biggest freshwater prawns in the world, and is widely cultivated in several countries for food. While M. rosenbergii is considered a freshwater species, the larval stage of the animal depends on brackish water. Once the individual shrimp has grown beyond the planktonic stage and becomes a juvenile, it lives entirely in fresh water.
The common galaxias or inanga is a very widespread Southern Hemisphere fish in the family Galaxiidae. It is a slim, narrow fish with a forked tail and a mottled, spotty pattern, typically about 10 cm (4 in) long when fully grown. It lives in fresh water, but spawns at river mouths and spends the first six months of its life at sea, returning en masse in spring. Its vernacular names include cowfish, jollytail, common jollytail, eel gudgeon, inaka, native trout, pulangi, puye, slippery tarki, spotted minnow, Falklands minnow and whitebait.
The silver perch is a medium-sized freshwater fish of the family Terapontidae endemic to the Murray-Darling river system in south-eastern Australia.
The bluegill bully is a fish in the family Eleotridae that is endemic to New Zealand. It lives in shallow, fast-flowing riffles and torrents, where it forages and shelters amongst the gravels. It has a similar distribution to the other endemic riffle specialist, the torrentfish. It can be found up to 100 kilometres (62 mi) inland, and from sea level up to an elevation of 480 metres (1,570 ft). The bluegill bully is the smallest of the Eleotrids, commonly reaching only 60–70 mm (2.4–2.8 in).
The Indo-Pacific tarpon, also known as the oxeye herring or simply herring due to its superficial resemblance to the true herrings, of which it is not a member, is the smaller of the two species of tarpon and lives in Indo-Pacific waters.
The skipjack herring is a North American, migratory, fresh- and brackish water fish species in the herring family Alosidae. The name skipjack shad comes from the fact that it is commonly seen leaping out of the water while feeding. Other common names include blue herring, golden shad, river shad, Tennessee tarpon, and McKinley shad. The skipjack shad is restricted to the Gulf of Mexico drainage basins. Skipjack are found in clear to moderately turbid water in areas with flow. Because they are a migratory species, dams often impede their reproduction. Records suggest that this species was much more abundant in the Upper Mississippi River basin before it was impounded. Currently, skipjack is most abundant in the Upper Mississippi River below the mouth of the Ohio River. They are known as an "early-run" species as they migrate to spawn in the early spring.
Freshwater shrimp are any shrimp which live in fresh water.
The Ouachita map turtle is a species of turtle belonging to the family Emydidae.
The ghost shiner is a North American species of freshwater fish of the family Cyprinidae. It is generally characterized as being a small bodied, silvery and fusiform shaped cyprinid. Notropis buchanani is morphologically similar to and often mistaken for the Mimic Shiner, which is evident by its former classification as a subspecies of Notropis volucellus.
Macrobrachium carcinus is a species of fresh water shrimp known as the big claw river shrimp. It is native to streams, rivers and creeks from Florida to southern Brazil. It is the largest known species of Neotropical freshwater prawn, growing up to 30 centimetres (12 in) long and weighing as much as 850 grams (30 oz), although even larger specimens have been reported. It is an important species for commercial fishing in the Sao Francisco River basin, where it is known by the local name of pitu. M. carcinus is omnivorous, with a diet consisting of molluscs, small fish, algae, leaf litter and insects.
Macrobrachium crenulatum is an amphidromous freshwater shrimp of the Palaemonidae family in the Decapoda order. It is found in lowland rivers and streams from Panama to Venezuela, as well as on several Caribbean islands. The species is common in the Toro Negro State Forest in central Puerto Rico. Studies have shown that the species have higher sensitivity to environmental, hydrological and chemical factors than other crustaceans also studied and which affect its migratory patterns.
Macrobrachium vollenhoveni, the African river prawn, is a species of large, commercially important prawn from the family Palaemonidae from West Africa. It is a catadromous species that moves from freshwater to brackish water to spawn returning to freshwater as larvae. Recent research has shown that it could potentially be used as a biological control to reduce the rates of infection people living near rivers where this species occurs with schistosomiasis.
Macrobrachium nobilii is a species of freshwater shrimp, first described by Henderson and Matthai, 1910. It belongs to the order Decapoda and family Palaemonidae.
Macrobrachium grandimanus, also called Hawaiian river shrimp or ʻopae ʻoeahaʻa in Hawaiian, is a species of shrimp. It has an amphidromous life cycle and is endemic to the Hawaiʻi islands.
Caridina typus, also known as the Australian Amano Shrimp, is a species of amphidromous atyid shrimp. It was first described by H. Milne-Edwards in 1837. It has a broad distribution in tropical freshwater habitats in the Indo-West Pacific region, with its western range extending to eastern Africa and its eastern range extending to Polynesia. It is commonly found in rivers and streams in coastal areas or on islands. C. typus is known to play a role in sediment distribution and shredding leaf litter, manipulating the environment using their pereiopods and setaceous chelae. The species is also an important component of the food web, both as scavengers and as prey items, and is considered a keystone species for the stream ecosystems it inhabits. According to Choy and Marshall, the species can be characterized by a "short, dorsally unarmed rostrum, the presence of epipods on the first four pairs of pereiopods, and the presence of an appendix interna on the endopod of the first pleopod of both sexes." It can be kept in captivity by aquarists as pets.
Macrobrachium scabriculum is a species of freshwater shrimp. It is distributed in countries and territories around the Indian Ocean. It is known as Goda River prawn. The total length of male prawns become about 6.5 cm long and in females it is about 5 cm. A kind of fur develop on the chelipeds of males. Eggs produced by M. scabriculum are smaller in size, brownish in color, elliptical or oval in shape and hatched larvae undergone migration to low saline water for completion its life cycle.
