- Joined
- Apr 1, 2017
- Messages
- 911
- Reaction score
- 637
I volunteer at a small public aquarium and noticed the addition of a pair of threadfin butterfly fish into our tropical tank. They were added at the same time into our fairly large system and got along for a few months until one started attacking the other. I know that these types of fish dont generally get along well with each other but why did the aggression occur months after they were introduced? Its not my job to care for these fish aside from doing basic census and feeding.