Most fish just swim away or hide.
They don't really defend themselves. They hide in aneomes and swim away.
Porcupines defend themselves with their quills.
sharks defend themselves because they are afraid of being eaten and attacked by the other fish or animals
fish
They can't. That's why you don't put them in a tank with fish!
Male honey bees (drones) can't defend themselves as they are incapable of stinging.
Dogs use their teeth and strong jaws to defend themselves.
neddles retard
to defend themselves
swim away or if they are fighting fish like sharks, octopus etc. then they would supposedly fight back.
They use their claws, paws, and teeth.
Porcupines defend themselves with their quills.