Found this posted on another online community. I am stumped but genuinely curious as to what happened; maybe the fish experts here can help.
I’ll summarize:
- 29 gallon freshwater tank
- fish got red sores on their mouths / disappear / sink to the bottom / “explode into giant cottonball things” / any combination of the above
- no dead bodies were seen, but there were no predators in the tank either
- the original poster added live shrimp, but they disappeared as well
So what do you think happened here? I’m really wondering about the “exploding into giant cottonball things” part… doesn’t sound like anything I’ve ever heard of.