Answer:
Some fish have spots on their tail to trick other fish that that is their eye because fish cant swim back wards so predator fish attack from the front so they cant get away. The pray fish will then be able to get away because the can swim forwards to get away from the predator. Puffer fish their defence is blowing up in a spikey ball and so first the predator might not be able to get them in their mouth and if they were able it would be painful so hopefully the predator would leave them alone.
Step-by-step explanation:
I go fishing in river, lake ocean, every where ps me is a girl don't judge thanks