What do you mean by potamodromous migration?
Potamodromous migration: Migrations of fish that occur entirely in freshwater, called potamodromous e.g., carps and trout. Trouts and carps travel long distances in large shoals in search of suitable spawning grounds and return to feeding areas after spawning.
What is the meaning of potamodromous?
: migratory in fresh water.
What is alimentary migration?
Alimentary or Feeding migration: migration for search of feeding ground. It occur when food resources get exhausted. Gametic or spwaning migration: it occur during breeding season in search for the suitable spawning ground. Climatic or seasonal migration: migration in search for suitable climatic condition.
What is Amphidromous migration?
: migrating from fresh to salt water or from salt to fresh water at some stage of the life cycle other than the breeding period.
What are the example of Potamodromous fish?
Several Pacific salmon (Chinook, coho and Steelhead) have been introduced into the US Great Lakes, and have become potamodromous, migrating between their natal waters to feeding grounds entirely within fresh water.
What is Anadromus migration give example?
(a) Anadromous migration: When fresh water fish exhibit migration from spawning areas (fresh water) to feeding areas (ocean). e.g. Brown trout, Petromyzon, Gasterosteus etc.
What is an anadromous migration?
Some particular types of migration are anadromous, in which adult fish live in the sea and migrate into fresh water to spawn, and catadromous, in which adult fish live in fresh water and migrate into salt water to spawn.
Why do Salmons migrate?
Atlantic salmon are an anadromous fish, that begins their life in freshwater and migrates to the ocean to feed and grow, and returns to freshwater to spawn. They travel over 6,000 miles before coming back home to spawn. They sometimes swim 200 miles up the river to find their preferred places to spawn.
What are 5 examples of anadromous fish?
Some of the best-known anadromous fishes are the Pacific salmon species, such as Chinook (king), coho (silver), chum (dog), pink (humpback) and sockeye (red) salmon.
What are Potadromous fishes?
a) Diadromous b) Anadromous c) Catadromous d) Oceanodromous e) Potadromous. Diadromous: It is derived from the classical Greek word where “dia” means “through” and “dromous” means “running”. In this type the fishes migrate between fresh water and sea water e.g, pacific salmonids.