Gourami with digestive issue
Hello everyone. This one's got me stuck. I've lurked around forums like this before and thought maybe someone would have more insight then I do.
I just moved my male tiger gourami into a new(cycled for a week) tank. He did well on night one, but the next day he was suddenly colorless and lethargic, then started expelling bubbles from his gills and his vent.
Doesn't seem like a puncture or swim bladder issue. He swims fine when he wants to.
I called the person I originally bought him from who suggested it may be bad food rotting in his belly and releasing air. He only eats one kind of flake food. I offered frozen bloodworms for the first time a few days prior, which I did not see him eat. However I think that theory might be likely.
I'd also like to mention the night before he moved tanks, I've been doing a preventative round of melafix and primafix, wasn't paying enough attention, and accidentally poured primafix directly on him. He may have thought I was feeding him and may have injested it. Never seen any ill effects on guppies when they swim into medication, but I'm unsure with him.
He's been medicated with furan 2 and aquarium salt for 2 days. Furan 2 didnt seem to have an effect, but aquarium salt seemed to help some. Still overall lethargic, and I'm not sure what to do.
Any advice or ideas would be appreciated.