How to make fish school?

  • We are currently upgrading MFK. thanks! -neo
Fish will school if they feel threatened, maybe they schooled because there were people walking by constantly?

One of the tightest schoolers you could get would be Rummy Nose Tetras...
or Exodon Paradoxus LOL
 
I'd be careful with something as small as a cardinal or neon in with angelfish. I wouldn't put anything below 2" in with an angelfish.
 
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