Maraena whitefish (Coregonus maraena) fish species and information / pictures of Maraena whitefish - Coregonus maraena

Scientific Name
Coregonus maraena

Common Name
Maraena whitefish

Biology
Forages along coasts and spawns in freshened parts of estuaries or in lower stretches of rivers. Also reported from deep, oligo-mesotrophic lakes. Feeds on benthic prey (crustaceans, molluscs, large insect larvae, small fish). Spawns for the 1st time at 3-5 years. Spawns in shallow water, in rapids or small rivers or over firm sediments in lowland rivers and estuaries. Spawners overwinter in river or at sea very close to estuaries. Some females spawn every second year (Ref. 59043). Eggs are buried in unguarded nests (Ref. 205). Eggs hatch in early spring and drift to sea or to estuarine bays. Juveniles migrate to sea and may migrate up to 700 km from spawning river to forage at sea. Northernmost stocks undertake the longest migrations between spawning and foraging grounds (Ref. 59043). Status of threat: Only few natural populations left. Most natural populations declined because of pollution, dams and weirs blocking access to spawning rivers, and overfishing. Apparent abundance in Ge