Cotton mouth/fin rot HELP

[Comfortbo]

while doing a water change I notice this on my one loach I think I know what it is but not sure so need help to help the loach. My water is spot on nothing has changed in the tank I have pics attached input would be great. Ty UGH won't let me post pics send me a pm and I can send the pics that way I hope. White around the mouth, fins in rough shape, and looks like he's blind in one eye.

[danielpropst]

I think it may be parasitic infection. Certain parasites like Ichthyophthirius multifiliis (commonly known as Ich or white spot disease) can cause white spots on the fish's body, including the mouth area. These parasites can also lead to fin damage and eye issues.

[fleetbench]

Dirty water environment and too much chlorine are also one of the causes
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[slobchorus]

Each fish species has a different habitat. Research block blast information to ensure the best habitat for the fish you keep. Follow to gain more experience.

[jesse99]

It sounds like your loach has a serious health problem — white around the mouth, frayed fins, Pokémon Gamma Emerald and signs of blindness in one eye could be signs of an infection or fungal disease.