04-29-2007, 04:23 PM
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strange shark behavior
I have 2 bala sharks along with 6 zebra danios, 6 cherry barbs, and 4 neon tetras in a 55 gal tank. They all seem to be doing fine except for one of the sharks. He swims up and down the end of the tank like he's trying to find a way out. It's exhausting to watch. The other shark just swims around like a normal fish. Is there something wrong or is this normal? He goes up and down at the end where I have a bubble rock, and the filter is also more at that end than the other.
The last time I tested the water it was ammonia-0, nitrites-0, nitrates-5, which is about where it's been for the past 2 or 3 weeks.
I guess I just want to make sure there isn't something I should be doing.