Sick rainbowfish

[LaloJ]

So I have a Sexlineata Rainbowfish with 3 or 4 white dots and some red markings in the mouth and near the tail, it looks like the fish wore lipstick, plus I see a couple of pretty thin threads coming out of its belly, you can imagine as if instead of excrement coming out that pair of very small and thin red threads comes out, the fish does not eat so I suspect internal parasites, I am thinking of medicating the hospital tank with Nitrofurazone for the red marks, do you have any other ideas for the other problems ? I have Paraguard for external parasites. Sorry but I don't have any image because the fish swim very fast, lol.

[Colu]

What your describing could be a bacteria infection and internal parasites such as camullanus  what I would do is treat with fritz Expel p active ingredient is levamisole you will have to do 3 course of treatment a week apart I would also do a course of nitrofurazone in between treating with Expel p

[LaloJ]

Thank you for responding here, I think it will not be easy to get that medicine here, I'm in Mexico and I have not seen anything of that brand, is there any other option?

[Colu]

It you can't get levamisole try and get a product containing flubendazole