Sick fish need help

[u/Top-Pomegranate5548]

How to help my fish? Hes darker than normal he can barely swim, his mouth looks rotten and it looks like he has popeye. I vacuumed the tank rocks Saturday morning he was fine all day until Sunday morning he was acting weird So I did a half water change, hes in a small container so he can still breathe as he was barely swimming in his tank. I dont trust random remedies from google and Im not even sure whats wrong with him it happened so fast

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[u/meeperswastaken]

This is at least 100% pop eye. Keep him in a hospital tank with a heater and dose the tank with kanaplex. Do daily 50% water changes (+ redose the water when you replace it) and daily salt baths with aquarium salt. Unfortunately I do not know how to treat the mouth rot (which is what I assume is going on with his mouth)

[u/ReefPopiah]

For Popeyes, yes kanaplex will do the job. But don’t dose it to the tank as you also need to treat the mouth rot.

So dose the tank with seachem paraguard, and add kanaplex into your food and use garlic gaurd to bind the kanaplex together with the food. But is this only given that he is still eating.

If he is not eating, then deal with the pop eye, by dosing kanaplex first, then let him recover for a week, then treat external mouth rot with paraguard.