mrsjoannh13
Fishaholic
I have 2 new long fin white skirt tetras in a quarantine tank. They have been in it for about a week and came from the same tank at the pet store. They have always co-existed fine. This morning I had a bit of an ammonia spike in the tank so I had to do almost a complete water change. Since then, one of the two has been "going at" the other one. Wherever the one fish goes the other one seems to chase after it and try to have a go at it. One fish is just kind of dive bombing the other one. There is no fin nipping... just the dive bombing for lack of a better explanation. And it's pretty relentless. I'm very worried that the fish is going to get stressed from the aggressive behavior of the other fish but I didn't really want to move them into my display tank just yet as they have not been in QT long enough. Any suggestions? Is this normal for them to be aggressive maybe due to stress from the big water change? Any help appreciated. Thanks!