Thin Fish

[Coralgurl]

I've been watching my fish and here's what I'm observing.

Sailfin - has approx 1/2" long flat back poop and 2 white stringy things hanging out of its anus. This definitely does not look normal. She normally is a strong swimmer, but she looks like she's getting blown around a bit by the power heads.





I haven't witnessed the others pooping.

Is prazipro my only option here?