The Proaquatix Japanese Dotui Goby is actually a species of dartfish. The Japanese Dotui Goby is rarely seen in the aquarium hobby. A honey-yellow color, the Japanese Dotui Goby also has dark line extending the length of its body along the middle. Once they mature, the Japanese Dotui Goby usually exhibits a blue iridescence around its gill plates. Also known as Schooling Goby, Wicked Sweet Goby, Japanese Dotui Dartfish, Schooling dartfish. This Japanese Dotui Goby is aquacultured by Proaquatix in Vero Beach, FL.