I have another thread going about a possible parasite in my fish, but I'm not sure if these things are related, and I'm hoping for some more opinions.
Yesterday morning I saw a white stringy poop from my Betta, and with help from Betta Slave I picked up some food (which he rejected) and some anti-parasite tablets.
He is in a 1gal quarantine bowl with no gravel so I can see what his poop looks like. The water is treated with the anti-parasite tablet, PRIME and 1 tsp of aquarium salt. He's been in the bowl since last night and I am preparing water for a water change.
He blew me a bubble nest today, but he is looking very sad and listless. He has the beginning of a poop that has been hanging off of him all day but he has not seemed to push it through. It looks normal in color but usually doesn't have trouble. Pic below, I know it's hard to see but it's the little orange thing hanging off the right. He ate breakfast happily, and when someone approaches the bowl he gets feisty but otherwise he just hangs there.
When he flares at me it looks like only his left gill flares, the other stays in.
I watched him take a big gulp of water and push it out through his gills. I know this is normal in most fish, but is it also normal for Bettas? I wasn't sure since they breathe air.
Any thoughts on any of this? Is it all parasite related? Should I feed him dinner if he is the same tonight?