| fish gone wild
Hi, I recently bought some 'bottom feeder' fish. the guy in the pet store recommended them to keep the tank clean. i have two of them. I'm not sure if they are male or female. They were always quite calm and hung around the bottom of the tank until recently, one of them is diving up and down all the time and actually seems to have changed color from a brown/ Grey color to a more orangy color. it seems to have gone mad!!!! is this a mating habit , is it about to lay eggs or is it diseased? it just keeps going up to the surface and back down all the time. can anyone help?
f x x x | 
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