So as Ive mentioned in a previous post somewhere, I moved my fish back to my house after a friend took care of them for a few weeks. Now I have a platy that is trying his very best to swim and live, but he keeps sinking to the ground so sometimes he gives up. I dont have a hospital tank, but to get him out of Sydney's path, I put him in a breeder box. What kinds of things could cause him to lose his ability to float as hes trying to swim? its been 3 days since he was moved.