Fish is any member of a group of organism that lack limbs with digits. included in this definition are the living hag fish, lampreys and cartilaginous. most fish are cold fishes, they change their body temperature. some fish are small, some are big, some colors are black, some are white, some are yellow, some are golden.
Fish are an important resources for human. Especially food. It is very important for our health and economy. So that we say fish is very important for our life and our economy.