Biota and Environment of Natural Areas

Markevich A.I.

Distribution of common fish in the nearshore biotopes, and number of sea raven Hemitripterus villosus females on the spawning ground near Bol’shoy Pelis Island (Far Eastern Marine Reserve)

Year: 2018, Number: 4, Pages: 109-122

Fishes counts, conducted in 2016 and 2017 by visual SCUBA methods has shown, that the high level of Sebastes taczanowskii abundance in the rocky biotope has decreased in 3–4 times (in comparison with 2015 counts) because of partial moving of young fish for feeding. Low fish variety (2–7 species) and abundance in the sandy bottom biotopes were kept after disappearance of Zostera bed in the mid-1990. Small amount of bottom fishes with good camouflage coloration lives here, and temporally pass shoals of nomad fishes. The beginning of Hemitripterus villosus spawning has moved till September, 16th 2017, it is the latest date in comparison with 1997 observations. It was a result of more high, than usually, water temperature on the 15–25 m depth in places of fish copulation, close to H. villosus spawning ground.

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