Muksun (Coregonus muksun)
The mouth of this fish is inferior, the snout is blunt and elongated; the skull narrows in front. The large upper jaw protrudes above the lower jaw. The snout is wide; the back behind the head rises steeply.
The maximum age of muksun is up to 25 years; the average weight in catches is 1-2 kg; the maximum length is 94 cm, the weight – 13.8 kg. In winter, this fish feeds on zooplankton, and in summer – mainly on bottom invertebrates. The spewning run into the river begins in late summer; by November, muksun reaches the spawning grounds, which are located up to 1-2 thousand kilometers from the sea. Spawning takes place during the freezing period at a temperature of no more than 1-2 degrees Celsius.