Chromis School

[High tide]

I totally agree that what we consider a school is really just a small group, comparatively. That being true, a small group of no less than 6 can still exhibit schooling behavior in an aquarium if their needs are met.

I have kept a group of 6 happy and healthy for a couple years(before total system crash) and now have 2 groups of 8 for several years (in separate tanks) that both spawn regularly.

I attribute my success to 4 basic requirements: plenty of space (maybe no less than 100 gal for 6), decent water quality, regular and frequent feedings, and lots of flow (only times I have been successful was when running Tunzes).... well, maybe 5 requirements.... they also need coral they can hide out in.

Hope this helps.