REPRODUCTION OF RAINBOW TROUT (PARASALMO MYKISS) OF LAKE LOWER KOLSAY OF THE STATE NATIONAL NATURAL PARK «KOLSAY LAKES»

Abstract

The article presents the materials of fishery scientific research on Lake
Lower Kolsay of the State National Natural Park (SNNP) «Kolsay lakes».
According to the assignment of the Customer and the Working Program of
Research for the current 2022, among other study issues were: clarification of the
duration of rainbow trout spawning in Lake Lower Kolsay and the conditions for
its reproduction. According to the results of the studies performed, it was
established that in this reservoir, despite the absence of areas for reproduction with
running water and fast flow, ordinary for rainbow trout, spawning occurs
successfully due to the presence of a crushed stone substrate, purity and high
transparency of water. According to the results of the studies, it was recommended
to reduce the previously established period of the ban on amateur (sports) fishing
from 3 to 2 months on Lake Lower Kolsay, as well as Middle Kolsay by a time
difference of 10 days, which is important for the leisure of tourists and other
vacationers at the SNNP «Kolsay Lakes»