Ok lately my fish have been acting strange... i dont know what it is but im starting to get concerned. This morning i cleaned the tank as i do everyweek... 30% water change and the normal chemicals which keep my tank 100% almost all the time... and i came back from the store with feeders for them as usual and they ate all the feeders, now i just looked in the tank and there is a bunch of reguratated feeders half digested all over the bottom of the tank? i dont get it this is the second time they have done this in two weeks and im getting concerned. But today they are doing somethign alittle different they are circling the top of the tank mouth up to the top of the water? it doesnt make sense to me but i dont want to loose my fish so someone help please