If he's still eating, then that's a good sign. He could just be constipated. That happened to my last betta. I fed him a little zucchini. The next day, the bloat was gone, and there was a huge betta turd on the bottom of the tank! :O
I hope he is just constipated, it seems to have fluctuated a bit, I starved for longer than normal last week when he looked a bit funny and it dropped, but today he looks quite big again- I fed flake and an algae pellet for the loaches yesterday (everyone has a bit of the pellet though
) so they had a bit of a feast. Have I just got a very sensitive boy?! :duh:
Also, this may seem wierd but I've never actually SEEN him poo! Like, the platies are always swimming about mid-poo without a care in the world, and I don't know whether it's cos he's a crowntail and it disguises poo-strings but I never see him doing one!
What is zucchini? I'm in the UK so I THINK you are on about courgettes, but I'm not sure!! Silly me!