Hahaha. Real helpful..ta Lana. lol. Don't have band-aid small enough. No she was by herself but she was others!? We have a 2ft tank. The front part has 3 parts and the back is 1. The water goes to all the parts. Confused? It was apparently a guppy breeding tank. We have/had 3 males in the front 3 bits and the girls in the back but she was the only girl cos I moved the other two out to a different tank before christmas...a failed breeding attempt! Silly male destroyed the nest. The males did not get the problem and the girls were not, as far as I could tell, fighting or chewing. This happened after I moved them. The other fish are ok [ Oscars, angels,neons, glass catfish, fighters, black widows & goldfish] so I don't think it is the rain water. And yes Brettix, they do get changed regularly, at least every 2-3 weeks. BUT I don't do a full change. I empty about 2/3 out and top it up. I was told this will retain the bacteria needed by fish!?