I was at my friends house the other day and he has a 8-9" inch oscar with a smaller jack Dempsey in a 75 gallon tank. When I went to see it I realized his oscar was struggling to stay under. He kept floating to the top and was trying to swim down over and over again. His stomach was a bit swollen too. I didn't know what was wrong with it. Does anyone know what this is? His filtration is pretty good though.
Sent from my iPhone using MonsterAquariaNetwork app
Sent from my iPhone using MonsterAquariaNetwork app