So now I'm having a big problem. The blue girl, Gamma, was happily active and not overly bothered by the filter, until this morning. She is now swimming somewhat lopsided and seems sort of gently bent. She seems to have control over her back half and fins, but is very weak and kept getting sucked near the stupid filter. I noticed this and freaked and unplugged it. She seems to be able to move around the tank better, but she's still staying very near the surface and seems to keep floating back up every time she comes down, so at this point I'm thinking swim bladder.
BUT when I first got her she was irridescent blue, and yesterday I saw that the top of her face was sort of a matte green. I thought oh cute, changing colors since she's a wee lass. BUT it has spread significantly since then (all of her face and now about 1/5 of her front side and now I'm wondering if it's something else. Confused.