20-30 damsels or cromis in a 120 reef?
Eli
6 yellow tangs in a 120? Um ... don't do it.
My understanding is that yellow tangs are a schooling fish, but in very large territories (ie. kilometres).
When confined to a small box they get aggressive towards one another. At the stores, I've never seen tangs that didn't look to be in terrible shape when held together in the same holding tank (even when the holding tank is large, like ~100gallons). They just beat each other up too much.
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