In 2005 the ISFC added a clause to Rule 4 which facilitated anglers who wished to present photographs for fish identification purposes instead of presenting a fish body.
This means that where a body is normally required, a photograph (or photographs) may be sufficient if it provides conclusive evidence of the identity of the fish. To assist anglers a list of the some external identification features for these particular species are presented below. However, the Committee cautions that a body, which will be examined by a biologist, is the only reliable means of ensuring a correct identification.

Photographs should be taken as soon as possible after the fish is captured. The photograph must be in focus, clear and in colour, printed on good quality paper and show the relevant identification features. It should ideally include the name of the angler and date of capture. Close up photographs are required for many features and these photographs should fill the entire frame. Retain the fish if unsure of photograph quality.

High quality Roach/Bream Hybrid identification. Images from Dubliner, Philip Brennan

Fish Species and Features to photograph

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