Well i have had him for about 3 or 4 years. I am not sure how big he should be at this point , but he is in a 20 gallon tank and is an albino. I thought they turned mainly yellow mine is still pink, maby it just happens later in their life. My main concern is that he seems very very lethagic latly. the very tip of his tail is dried up , but it's been like that for a while and the people told me just to put on neosporin. I am really concerned is it that he need to be feed more. i feed him about every 10 days. or is his tank to cold. I have a hiding place for himm. I think he may have out grown it. He always has fresh water, and i don't know what to do. Any help?