Valyrian
Fish Fanatic
Well I just got this tiger oscar and it seems like he's too heavy to swim or something. He would sit on the gravel and he would float up for a second and then fall back down to the gravel. Once, he swam against the wall of the aquarium and got up to about halfway up the aquarium but once he was in open water and didn't have the wall for support, he fell down, just like gravity would pull us down. Do oscars need a little salt water? Is the water not dense enough for the oscar to float in?