02-09-2009, 08:56 AM
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Originally Posted by 1077
Most recommend ONE shark if you have to have one, per tank. They don't appear to bother other upper level to mid level swimming fish. But I recently returned a rainbow shark approx 5 inches to the store for it began nipping the tails and dorsals of corycats and seemed intent on pestering kuhli loaches whenever it found them. Pity,, Despite numerous places for it to call it's own, It seemed intent on claiming the entire lower region of 75 gal tank which is what I believe minimum should be. I find no serinity in a fish that aimlessly swims back and forth from one end to the other due to lack of space or lack of hiding or resting areas. the more you can provide of both, the happier the fish will be.
Two small 3 inch sharks could work in 55 gal for a while but i fear it would only be a matter of time before one kills the other outright,,, or stresses it to the point that it succumbs to parasite or disease.
I hear you but I do fully believe, a red tailed shark should fully be able to live in a 55 gallon, that's a lot of room for a 4-5" fish. claiming the whole bottom is from what I would assume rarer as they usually claim a cove or corner of the tank. I believe Petco should take un-wanted fish for free, but I'm not sure. I got him cheap, $2.