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Sterlet

infernally smoked sterlet in illegal quantities

Acipenser ruthenus

A sterlet, Acipenser ruthenus, resting on gravel in an aquarium
A sterlet, Acipenser ruthenus, resting on gravel in an aquarium

Photographed at the “Subaqueous Vltava” exhibition, Prague, 2011

Public domain · Karelj · Wikimedia Commons