Question

What is the bottom fin of a fish called?

Answer 1

It is called the pelvic fin

Answer 2

Answer: pelvic fin

Step-by-step explanation:

Ventral or Pelvic Fins

The pair of ventral or pelvic fins located on the bottom front of the fish help aid in stability and slowing down the fish, or stopping it quickly. The fins also help the fish move upwards and downwards through the water.