According to the fish encyclopedia, Zouma is also called "bamboo pod fish", which belongs to the middle and lower layers of warm sea water and is a fierce carnivorous fish with cold water at the bottom. Needlefish is a deep-sea fish, also known as Bello. Its head is round, its side is flat, the base of its dorsal fin is very long, and there is a protrusion below it. Their living environment is different, so these two kinds of fish are different.

Mata fish feed on tiny algae fragments and plankton. The food of needlefish is mainly small fish, cephalopods, crustaceans and so on.