sick guppy?

[freshwaterfins]

i recently got two dumbo eared guppies. beautiful. one of their tails is half off. and his colors are horribly faded. it looks like it was cut off but i don’t see the other fin, the fun even looks shriveled up and he’s swimming odd. is there a treatment i can give him ?

 

[SaraB]

Sounds like it might be fin rot. I had that issue with one of my fish. Melafix worked for me.
Either that or something bit it's tail off and stress is causing the lack of colour.
What's your tank parameters like. Things like temperature and nitrates/nitrites and size.

 

[Mtl Parrothead]

I’m following I just lost one guppy last night, sounds very similar but the rest of the tank is doing great