My warmouth which i bought about a year ago, at about 3" is just now to about 5 or 6, The shadow bass i have i got at the same time roughly, is now also about the same size, They are both in a 75 with a couple of longears, a couple of small punkinseeds, and a leopard centopoma, these fish all cohabit great, very little or no aggression from anyone, and ive enjoyed them for a year so far. I dont subscribe to the theory that you cant have a fish, because your current tank is too small. If they are small when you get them, they grow up together, it will work and ive had a year so far to worry about a bigger tank if i choose to get one.