Congo Tetras - Aggresive?

[fishpoop]

i've recently added a pair of congo tetras to my tank of mollies, platys, and hoplo catfish. the congo tetras are bigger than all of my other fish and it seems the other fish are quite beat up in the fins. has anybody else had experience with congo tetras being fin nippers?

 

[dixaisy930]

Keeping a large group of them would probably cut down on the fin nipping.

 

[idlefingers]

yeah, congos need to be in a group of at least 6. Having more females than males will help spread the aggression.

What size tank are they in?