Brown rock trout
Hexagrammos octogrammus
Brown rock trout       Most probably, a would-be angler who decided to take a walk along rocky shallows with occasional algae shrubs would first of all run across a brown rock trout.  In summer, this would be the most common and numerous species on the coast of Peter the Great Bay. The brown rock trout is not large in size, and you would rarely encounter specimens of up to 30 cm long. Despite all its motley color, the fish color excellently conceals it among the alga shrubs, individual mussel druses, cracks and indentations in cliffs so characteristic of its habitats. The fish is capable of changing its color depending on the background to turn either more reddish, brownish or greenish. The color of its cornea is particularly notable.  On a bright sunny day, it is crimson-red, or in the early hours of a foggy  day and at depths of a dozen odd meters almost colorless.
 The brown rock trout feeds on small crustaceans and mollusks, and large specimens also on fish.  Large specimens live in small groups. IN September-October, the brown rock trout emerges onto shallows for reproduction. Small roe clusters are laid on alga shrubs. Males, who spend over a month nearby to almost eat nothing during that period, guard the egg masses. Small specimens occupy specific floor sites, which they defend from other fish. Economically, the brown rock trout is of slight significance.