Of course this was much cooler in the ocean - these fish were darting in and out the swirling flows.

These schools were pretty skitterish, you chase them and they sped off.  The bright yellow tails just disolve into the mirk as they swim away.

These fishy were pretty common and defended a patch of bottom making them fairly easy to photograph.  They are a brighter purple/black than this washed out photo look like.