Sleek with gunmetal flanks, grayling are instantly recognisable. If there’s any doubt, the sail-like dorsal fin is their most obvious feature. Like salmonids too, they possess an adipose fin, which, for my money, firmly ranks them as a gamefish despite their spawning season (more over the page). The grayling’s underslung mouth suggests they are principally bottom feeding fish too, very much like barbel. In fact, when at rest, or feeding for that matter, grayling generally like the streambed tickling their bellies! A study of the grayling’s eye illustrates an almost teardrop shape with its point trained forwards. Some believe this improves the grayling’s focus when feeding close to the streambed!
Teardrop eye. Underslung mouth. Dorsal fin.