Man dragons are all more aggressive. They will kill each other. Man Long fish, belonging to the family of silk-footed perch, hairy-footed perch genus of small tropical ornamental fish. Species (including artificial improved species) variety, can float out of the water for air, the water quality requirements are not high; mixed diet, temperament is more ferocious, can be mixed with other mild temperament, similar size of tropical fish. The life span is generally not more than three years. Distributed in the Malay Peninsula, Thailand, Indonesia and other regions.