Any idea what this might be?

[A Moore]

See the white piece on the chin of my blue dolphin cichlid. Any idea what this could be?

[Fonske]

I don't know what it is, but I have seen very similar looking thing on the chins of my rainbowfishes. It appeared and disappeared after several days without me doing anything. I assumed (without any proof) that it was some kind of wound.

[A Moore]

Okay thank you so much for your reply! Hopefully that’s what this is too. 😅

[Taco Playz]

Looks like mouth fungus.

[A Moore]

Thank you! Im keeping an eye on it and treating with elevated salt. We had an Ich outbreak I treated for a few weeks ago but it may not be completely gone 😣

[anewbie]

I wouldn't treat with salt; it should just heal on its own.

[A Moore]

Thanks anewbie! I’m treating with salt because there were still traces of what I think is Ich. We had an outbreak that I treated with IchX.  Lost two fish on the first day of treatment (rainbow shark and clown loach). After extending the treatment 3 days I noticed black spots on the blood parrots that were increasing and one of my yellow electric labs had dark bearding. I switched to salt and everyone already looks better. The dolphins chin is the biggest concern now. I’m hoping it will go away on its own and that it’s not columnaris. I’m going to keep an eye on everyone and give them some time. 

[A Moore]

Update: the dolphin was hiding and not eating, fins frayed. I treated the tank with Maracyn. He’s back to normal swimming, not hiding and eating but still has the sore on his chin. Should I do another round of Maracyn assuming it is cotton mouth or wait it out to see if he heals up? The other fish in the tank look great. 

[Colu]

It looks like a growth I don't think maracyn would have any effect I think it just a case of wait and see for now and treat if it gets worse

[A Moore]

Thank you for your reply! I appreciate your input very much. It certainly looks a growth