About three days ago I went to petsmart and bought one oscar and a pleco for my 55gal. Eventually I know this tank size will be to small but, right now they are babies. Ever since I brought them home the oscar has been hiding until lights out. When I drop food he doesn't see it or just simply ignores it. I saw him bite into an algae pellet that was on the bottom of the tank and then spit it out? He won't eat the freeze dried blood worms or chiclid pellets. Is he just scared? It's been three days and I haven't seen him eat, I don't want him to die. The pleco too, haven't seen him eat he just stays stuck to the side of the glass or stuck behind the filter. My water tested fine before I put them in the tank, I'm going to about a 10% water change every 2-3 days to make sure I stay on top of things. Any advice?