schooling is lots of the same kind of fish that all live together and its helps them because they can warn each other if there is an enemy approaching. There are several reasons why schooling might help fish, most of which are related to predator avoidance. One is possibly the reason given above. Second, schooling gives the school of fish the appearance that it is a larger organism, which might deter some predators. Third, schooling makes predation more difficult. Predators often key in on a single individual for s successful kill. If there are many moving together, it makes it more difficult for the predator to focus on one prey animal, generally improving survival of the entire group. There may also be some energetic reasons why fish school as it may reduce the drag in the water for any individual fish.
Probable because they are schooling fish. Schooling fish stay together in groups so that it is harder for predators to get at them I think. Some schooling fish actually have to stay together in groups or else they will get sick, so if you have, or are going to get a tank, make sure you get enough. Or, they might not be schooling fish, and might just be scared!
Most schooling fish tend to have colors of reds or blues with different patterns. Three common schools of fish are tetras, barbs and danios..
It depends on the breed, you will need to be more specific.
that would probably be homeschooling
They eat planktonic crustaceans and small schooling fishes.
No. This small, pelagic schooling fish is quite common.
Yes. All saltwater basses are schooling fish.
I am not aware of any "schooling" or "shoaling" fish that is not an egg layer. This would imply that these species of fish do not get pregnant.
watch for stress; find out if they are "schooling" fish; possibly separate them, or get a larger tank
No. swordfish are not 'schooling' fish. They hunt alone and feed on other fish.
they eat schooling fish, mainly mullet sardines and sometimes crustaceans
Yes, dolphins are fish eaters. See related question.