I wouldn't put the cream in the water... doesn't sound like a good idea to me. they need different antibiotics. You better get to cleaning that quarantine tank lol, because I don't think he's going to like being in a bowl.
I read/saw pics of what a pleco can do to goldfish and immediately got mine out of the tank. If it's a bigger pleco, I would say that it's a possibility that that is what did that to your goldie. Even if it's a small pleco it's a possibility... they like slime coating.
The Melafix is going to be your best bet I'd say... cuz it looks like a something sucked on him right there. Think of it like a hickey sort of. Brought all the blood to the surface but didn't break the skin.
And your pleco may be afraid of them... when they're awake.
I read/saw pics of what a pleco can do to goldfish and immediately got mine out of the tank. If it's a bigger pleco, I would say that it's a possibility that that is what did that to your goldie. Even if it's a small pleco it's a possibility... they like slime coating.
The Melafix is going to be your best bet I'd say... cuz it looks like a something sucked on him right there. Think of it like a hickey sort of. Brought all the blood to the surface but didn't break the skin.
And your pleco may be afraid of them... when they're awake.