koi fish anatomy height and weight relative to age of koi fish

Koi fish anatomy diagram. Here is the basic external anatomy of a koi, including fins, operculum, lateral line, barbels and more The external anatomy of Koi includes the scales, skin, fins, operculum (gill cover), vent, eyes, nostrils, barbels and lateral line. A koi’s skin is covered by a layer of mucus, which not only offers […]