Hypoplectrus, eine «hamlets» genannte Art von Fischen, sind in dieser Hinsicht bekannt (Thresher 1984). ###>Within seconds, members of this group can mate acting as a male and releasing sperm in one instance and then acting as a female releasing ova the next. Hypoplectrus, a species of fish called hamlets, are well known in this regard (Thresher 1984).