I am currently treating a fishie for internal parasites with Jungle's clear parasite fizzies. However Im not completly sure if that's the issue.
My understanding is that if he had parasites he would have white stringy poop but his is normal. So I am wondering if there is anything else that can cause weight loss.
He is currently in about 2 gallons with the fizz tab and Epsom salt.
The only real symptom is weight loss and clamped fins. Sometimes he is lethargic, sometimes he is swimming around.
Not the greatest picture...and his gills have always looked like that. he was in bad shape a few months ago when i found him...