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The sauger (Sander canadensis) is a freshwater perciform fish of the family Percidae that resembles its close relative, the walleye. The species is a member of the largest vertebrate order, the Perciformes. [3] It is the most migratory percid species in North America. [4]
It can attain a maximum length of 25 cm (10 in) but generally about 15 cm (6 in) SL and feeds on small invertebrates, plants, algae including other fish scales. This species is a seasonal migratory fish along the Mekong river and its tributaries from Laos.
Many species of salmon are anadromous and can migrate long distances up rivers to spawn Allowing fish and other migratory animals to travel the rivers can help maintain healthy fish populations. 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 ...
The skipjack herring (Alosa chrysochloris) is a North American, migratory, fresh- and brackish water fish species in the herring family Alosidae. [3] The name skipjack shad comes from the fact that it is commonly seen leaping out of the water while feeding. [4]
During the migration, the fish endure low water temperature of 8.0–9.5 °C (46.4–49.1 °F) due to the steady influx of snow-melt water. This low temperature induces the fish to migrate to side streams where the ground water temperature is around 17.5–21.5 °C (63.5–70.7 °F) to spawn. In other river, Ravi River, this species spawn in May.
The tub gurnard (Chelidonichthys lucerna), also known as the sapphirine gurnard, tube-fish, tubfish or yellow gurnard, is a species of marine ray-finned fish belonging to the family Triglidae, the gurnards and sea robins. It is found in the eastern Atlantic Ocean.
Arripis trutta is a migratory fish that may swim long distances, sometimes thousands of kilometres. The adults congregate and form very large schools off oceanic beaches and exposed coasts coastal areas, [3] and will enter rivers. [1]
The fish are gregarious, feeding on zooplankton and fish larvae, and are hunted by tuna, marlin, bluefish and cod. It is a migratory fish, moving inshore during the summer and back out into deep water later in the year. Spawning takes place near the surface in the open sea. The eggs have filaments attached and are pelagic. The juveniles inhabit ...