Are the new fish long-finned zebra danios? Those can nip other fish's fins and pester them causing them to go into a kind of 'shock'.
Yes they are zebra danios ... Would my gourami snap out of the shock?
IMO the gourami will return to normal behavior once the danios are gone. Danios may not be the best choice for this tank. With a low number (3) the aggression will probably be directed to the weakest of the danios and the other fish.
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I just bought them yesterday! I would be terrified to give them away. But I'll do a little experiment ... Will take them
Out for awhile and see if the gourami will swim
Would you recommend getting more? A bigger group??
Kind of late to suggest doing research before making additions...
The usual advice is that a larger number of danios will help disperse aggression, however, the current stocking plus tank size, filtration, etc will need to be taken into account. Might be easier for the sake of the existing fish to take them back.
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