Cleaner Shrimp's Black Belly

[Delphinus]

It is really neat to see a release. In my experience it always happens shortly after lights-out, or just shortly before. You can hardly see them but you can tell something's up because the fish will be going nuts chasing food. They're instantly recognizable as little shrimp, unfortunately (at least in my experience), if you have any aspirations to try raising the fry you have to be quick to siphon them out because they will be eaten up in a matter of minutes.