James Parnell answered
Fish use a number of techniques to protect themselves from predators in the ocean, and different species use a variety of these techniques, to avoid becoming a tasty spot of lunch for other fish!
How do fish protect themselves from predators?
How do fish protect themselves from predators?
- Schooling: Some fish - such as sardines - swim in large groups known as schools. The principle here is that there is safety in numbers: The more fish that group together in a certain area, the safer they will be, especially compared to if a fish was to swim alone.
- Camouflage: Most fish adopt some sort of camouflage, which is brought about by natural selection. The most effectively-camouflaged fish are more likely to survive - and thus they breed with other well-camouflaged fish, which makes it more likely that their offspring will inherit this useful trait.
- Poison: Some fish have poisonous spines that would result in injury being caused to any predator that tried to eat them. The best example of this type of protection is the Lionfish, which has large poisonous spines all over its body.
