The Celebes Rainbowfish is very attractive and active fish that has remained an aquarium favorite since its introduction in the 1930's. Sporting striking color combinations of blues and golds, their remarkable fins are wispy and translucent on mature males, with the two dorsal fins on top creating a 'sail-like' effect and long filaments streaming out from the tail fin. These beautiful fish make great additions to a community tank providing a lot of intrigue as they swim around. Yet there is no getting around the fact that these fish can be delicate; a mature and well-established aquarium with suit them best. Celebes Rainbowfish are actually a bit timid by nature, and will thrive in a planted aquarium.