Dollar Nicely

Silver dollar aggression?

My silver dollars are never out of aggression. Why? I had two which bicker and fight all the time before. I added another one three days ago. They were all peaceful and schooling nicely, all of a sudden today, the new one(smaller than the first ones I got) is extremely aggressive after feeding time. It scours the tank by itself now while the other two bigger ones remain quiet. The older ones are no longer fighting but the smaller one is getting on my last nerve. It’s a fifty gallon tank with 3 angelfish, two raphael catfish and one featherfin catfish. It’s barely possible to add more fish, but I could give it another filter.

Sometimes new fish don’t fit in. Especially when there’s a size difference. No real solutions other than just getting rid of said fish or getting a bigger tank. As long as hes not hurting anybody to the point of serious injury just let it all play out for a few weeks and see if he calms down. Good Luck

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