Piranha

The Piranha is the fish that you start with. All other fish need to be unlocked. It has 1 evolution

Poop-pedo
A Torpedo made of poop will hit an enemy behind you and reduce their size

Mighty Poop-pedo
Slightly increased damage, now fires 3 Poop-pedos

Strategy
Fire Poop-pedos at enemies behind you. It can scare them away or maybe they become smaller than you and can be eaten