Hey I have had my two albinos for at least 2 months and my tiger for maybe one. I bought my white albino and my tiger from my lfs and my grayish albino from a chain store because i felt sorry for him. Even though I bought my tiger a month later he has grown larger then the grey one and it looks as if the gray one hasn't grown at all. I will post some photos later so you can see how large the other ones grew in comparison. He eats but is not too eager to get fed like my other two and has a much more dosile personality. I am scared that if he does not start growing he will get picked on too much and I will have to move him. I feed a varied diet krill, earthworms, mealworms, hikari gold/bio gold, and occasionaly feeder fish and I always try to make sure he gets fed but that doesnt usually happen untill the other 2 can't fit anything in their mouths so I don't know if they are getting too much and him the right amount so they are growing faster or if he has some disease or parasite based on where I got him.

try to spread out he food during feeding,sprinkle it all over,all oscars dont grow the as fast,ive got one that seemed to stay behind in the growth factor aswell the bigger ones have seemed to slow down now and he is busy catching up.

i suppose all you can do for now is to make sure that he does get food daily and keep a close eye on him to see if anything changes in his personality.

I guess, my one is becoming quite a fatty though