Dwarf gourami bloated and constipated swimming vertically

[xWarrior15]

I found my blue powder dwarf gourami today in this state. He was trailing a long piece of poop with him. Seemed like he's constipated because he was trailing his poop for over an hour. He keeps swimming vertically and taking gulps of air occasionally. I fed fleas last night and some flakes and granules during the day. But he's always been eating like he didn't eat for days.

What happened to him and how can I help? I am almost sure this is due to constipation and not sth else, right?

I threw cooked peas in, but he doesn't even care for good

Please help

 

[Colin_T]

If the fish suddenly got fat overnight, then it has an internal problem.

If the fish has stopped eating, got fat and done a stringy white poop, it has an internal bacterial infection and will probably die.

If the fish is still eating well, it could have dropsy (fluid build up) in its abdomen. Epsom salts can sometimes help. I don't know the dose rate for it.