Turtle

The Turtle is an unlockable fish with 1 evolution

Split'n Bomb
Throws a Bomb backwards that splits enemies up and causes damage

Mega Split'n Bomb
Slightly higher damage. Now splits enemies in 4 parts

Strategy
If enemies split up they also move forward. Use this to your advantage. Enemies chasing you will touch you if you throw a bomb. Try to guess if you are big enough to eat split up enemies