A wide range of new Danio imports have started appearing recently. Keep an eye out for D.kyathit, which was described in 1998 (it's found around Myanmar and looks a bit like a pale-blur Zebra danio ...
However, a new study of Zebra danios, Danio rerio, may provide the answer. Although Zebra danios haven't lost their swimbladders, the wild-form of the fish does have a surprisingly high number of ...