Uh oh. Cause my 2 CAE are like 5 inches!!! I don't know if they are eating algae anymore either, because I see little black tufts of algae on the side of the glass. (and yes it's algae, I have it in my other tanks too) Plus one of my really old pristella tetras has a big wound in his side, apparently it punctured (or whatever) his swim bladder, because he looks like a bottom feeder trying to swim on the top. But I'm not sure this is because of the CAE, it's basically a slit.
Well, gotta go,
Robin