The longer fins are good because, they don't have to be as deep to get the same surface area in the water.

Because of their long fins they should obviously be kept in a tank without fin-nippers.

Their long anal fins are used to allow the fish to make graceful forward and backward movements.

Now the cranes had a long fin, like the kind you see on the backs of fish, that was being lowered.

The tail was held up in the air, away from the ground, and had a long ridged fin.

Females lack the longer fins and are yellowish in color.

A long black fin, too tall for a shark.

The long pectoral fins were down and its back was arched.

Then instead of the whole body being thrown into waves, just the long fin is.

It gets its name from its long wide fins that look like wings.