Hi, I fear my male betta has dropsy, but I really can't tell. I don't understand if the scales are "pine-coning" or not. Fish is behaving normally other than resting on leaves more than usual.

I've tried to starve him as much as possible, I've given him epsom salt baths, fed him shelled green peas, etc. I did a 50% water change last night (hence Ni/Na/Ammonia readings prob low), but the swelling only seems to get bigger. Pictures attached below - any help appreciated.

To note: he has had some mild stomach swelling before, but this has always gone down after a small dosing of the whole tank with epsom salts. This time it has continued getting worse, and I've given him a few concentrated epsom salt baths, which haven't made any difference.

Tank size: 350 litres
tank age: 6 months
pH: 6.5
ammonia: I think pretty close to 0
nitrite: 0
nitrate: 0
kH: 40
gH: 160
tank temp: 26 celsius

He does appear to have dropsy, although I can't tell if he's pineconing as the pic is blurry. You can try treating with Esha 2000, which I've had some success with for dropsy.