Pearl danio is a friend of the carp distributed over Myanmar, Thailand, Malaysia, etc. A stripe with as blue half back by the side of the body as an orange is characteristic and beautiful popular danio. It swims around very actively, and although other fish may be chased after, there is nothing to the extent that an injury is inflicted. It acts as an adult, and I would like to be and to take care about with the small kind of character. It is very strong and easy to breed noisily to water quality. Any food is also often eaten and it bites greedily more quickly than whom. It seems that what was bred for admiration is expelled and the pond etc. are inhabited in Okinawa Prefecture in Japan. It is apprehensive as an alien species.