I rescued an RES that was the same way. It was 3 years old in a 10g tank and it was only 3-4". They fed it once a week and changed the water religiously when they couldn't see through it anymore, no basking, no nothing. When I got it in a good size tank and started feeding it, it doubled it's size in a matter of months. Ate more than the adult RES that I have now does.







