When I first bought my angels they were are about 1" to 1 1/2". They are now all over 4". I had them in a 48gl breeder tank with my 12 Panda Cory and Tetra Rasboras. But noticed them chasing the rasboras...and found out rasboras are their 'natural' food out in nature! Ooops! They also were bullies to the cory, and kept eating the corys' bottom feeder tablets!...?....This made me really wonder what was going on. I invested in a 75gl for them last summer. Since then, I have found out that they'll eat just about anything I feed them. ***Also, that once they are old enough to 'pair off', the females are very territorial. I've given away 2 females, and kept all 6 males. They seem to get along very well now.