Tank- 29gallon
Filtration- Marineland Penguin 150, Top Fin 10
Weekly 25% water change and gravel vac
I know these fish are schooling fish. Getting around to more of them: 2 black skirts, 3 pristella tetra, 1 zebra danio, and 1 bristlenose
ammonia, nitrite, chlorine: 0ppm nitrate 10ppm PH 7.2 hard water
I took multiple pictures and these were the best I could get. I'll see if I can get better ones tomorrow. In regards to my tank stock, none of the other fish bother the bristlenose at all so I don't think it's from nipping. I might add that this started off as a "blood bubble" I guess on the other side of the tail. Another smaller one was developing right beside it. In a matter of 30 or so hours, it looked like this.
That said, this is at my apartment at school and I am at home right now. I'm dreading walking back in there tomorrow...hopefully I see some improvement..