Crustaceans see the way humans see. As we discussed the colorful fish are found mostly in the tropics and not in opened waters and are allowed to be colorful. The fish in opened waters are camouflaged because they have to be, they do not have coral reefs around that they can hide in. The function of aggression is because of territoriality. Aggression is found among species and not between them.
Aggression is necessary because of competition of food.
Benthic copepods and living, moving zooplankton 3. United States and Europe 4. It gives you the ability to be in the fishes habitat for extended periods of time. Give examples of cooperative hunting. Pelicans, dolphins, here you can explain some schooling behavior.