06-15-2007, 11:06 PM
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well thats why I asked about the bouyancy. If there was a swim bladder disorder that is often due to bacterial infections. If you think he may be constipated somewhat then possibly try epsom salts and/or pea hearts (thaw out some peas, take off the outer layers and then chop up the meaty inside and give it as food). Both of these things will not harm the fish even if it is not consipation. In fact, I regularly feed chopped peas to a lot of the fish in our store, including oscars. Overall though, I still think that it is just a matter of the tank size. You basically have 4 south american cichlids in there and they need enough space to declare territories. The oscar alone will eventually need a 40-50 gallon tank...so make you next tank a big one. Good luck though and I hope things work out.