Parts of a Fish

Fish Physiology

It's easy to talk about the physiology of humans because we know the names of the parts. With fish, the names for key parts aren't as familiar.

Explore the diagram below to learn the names of fish parts, or skip it and move on, using it as a reference when needed.

We couldn't include all the features of every kind of fish, so we included three common but different fish types to start.

Choose a body type:
, or
Then select:
External or internal views.