That's what I'm thinking. I will try to get better pics soon of the one on the right. S/he was almost half the size of the other baby when I bought them. The one on the right is not nearly as active as the one on the left. I am also thinking of making a couple of sponge filters. One for their tank and one for my HM's tank. I think that will help at least the baby tanks cause. My HM would probably like it better as well. Who knows. Wish I could speak fishonese just like I wish I could speak Catonese.