brown trout salmo trutta european species of salmonid fish being measured

angling animal aquatic back background brown capture catch close closeup come delicious detail eating ecotype environment environments european eye fin fingerling fish fishing fresh freshwater globally habitat head healthy includes introduced isolated lacustrine lake measure mountain native nature parr pattern population populations preparing purely raw recultivation river riverine salmo salmonid scale sea seafood small space spawning species specimen spotted stream suitable trout trutta underwater water widely wild wildlife