in Ichthyology, the name of a Russian fish, which is said to be at first a tadpole, then a frog, and at last a fish. Dr Mounsey, who made many inquiries concerning these pretended changes, considers them all as fabulous. He had opportunity of seeing the fish itself, and found that they spawned like other fishes, and grew in size, without any appearances to justify the report. He adds, that they delight in very clear water, in rivers with sandy or stony bottoms, and are never found in standing lakes, or in rivers passing through marshes or muddy grounds, where frogs choose most to be.