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Roselawn Museum (
Wed, 29 Dec 1999 09:54:07 -0500

I am a novice, so go easy. I keep an aquarium at work with fish I
recently collected. I have no field manuals, but I have tentatively
identified some of the fish as warpaints, live-bearing killies, creek
chubs, some shiners I can't narrow down, and an Alabama hogsucker. I have
two other tanks at home with basically the same mix. Here's the problem.
These fish are continually nipping the tailfins of each other. At first, it
appeared that the killies were the aggressors, but now they're all doing it
(except the sucker). This does not occur in my tanks at home. The only
difference I can see is in the tanks, not the mix of fish. The tanks at
home are all-glass with external filters. The one at work is one of those
plastic jobs with the shaved corners that I picked up at a yard sale. It
has an undergravel filter. Any clues?

Steven A. Ellis
Kennesaw, GA

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