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Old 08-31-2014, 12:03 AM
albert_dao albert_dao is offline
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Remove one of them. I've had them swim across a 5' tank to beat on each other. You'll end up with one big fish and one skinny fish. The skinny fish eventually withers away.

You can try adding another with the intent that they'll pair. Tough part is they do not have any discernible sexual dimorphism, so it's a bit of a gambit.
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