Can anyone help my sick cichlid?

Hello! I have a 180 gallon, mostly Malawi tank. The water parameters are all good and all my other fish are acting normally and eating well. I have this one fish (a yellow lab, I think) that has been hanging at the top of the tank the last couple of days and not eating. Today he was in the bottom corner and the other fish are starting to target him, but he's not moving around much. I moved him into small breeder basket, for now, to protect him.

The only thing that has been different at all lately, is the last couple weeks I started raising the PH, KH and GH. The PH was originally hanging around 7.4, but I wanted to move it on up to around 8, plus I had never really focused on hardness, either. Over a week or more, I gradually moved the PH up to 8, and the GH and KH to about 15 or so, with Epsom Salt and Baking Soda, but I think I have them a bit high at 20 now (still judging how to balance it). The only thing that seems out of the norm for the fish, is that his stomach is slightly sunken and he has a mild bulge near his anus, as you may see in the pictures.

Any input would be appreciated!

Thanks - pics below:

not a yellow lab (labidochromis caeruleus)... maybe a metriaclima msobo or pseudotropheus saulosi?

ignoring species i would treat with cloat or metronitazole. good look.

Yeah sorry, I didn't want to give treatment advice because I'm still a noob and don't have the experience to give such advice. Just trying to help in anyway I can.

yeah i agree with you it is nto a yellow lab but not sure it is a saulosi or msobo deep lol.

it looks like a could be a red zebra to me.

Is this fish being picked on? Finnage looks to be in good shape. Possible bloat?

Definitely not a yellow lab or female saulosi. Looks to be a zebra.

i think it is bloat.

Thanks. I thought bloat made the fish's belly large?

not always. sometimes (most of the time) they die before that can occur. either way the meds i listed should wipe out most internal infections.

I'm out of separate tanks, can I treat in the main tank?

yeah just more $$$$

Ahhhhh. Good point! Never used either med, or even heard of clout... Any advice?

clout is a combo of several drugs. it kills just about everything.

Feed the rest of them with metro, but if he doesn't eat then I would move him to a different tank, but if u don't hav another tank, it's going to kill u with the treatment, metro costs round 10 to 12 bucks and that will only do a 100 gallon tank, so best bet is move fish around even in a temp hold put him/ her in the tank dose for at least 10 days then see how that goes.

Clout will kill scaleless fish!! Make sure u don't have any loaches in the tank, like dojo. Make sure that you don't have any scaleless fish.

Thanks for all the input! I moved the fish to a 5 gal bucket with a filter and used Clout... we'll see how that goes.