Sick Crayfish???? (New to PetShrimp Forum - idk where else to post)

[mk575]

Hi guys,

I couldn't figure out how to post in the crayfish forum on this site since I'm new to it, but anyways I have a colony of marbled crayfish (Procambarus virginalis - the parthenogenetic kind) and noticed (about a week ago) that one of the largest, sexually mature females has a brown spot (with a white center) on top of its head between its eyes. Is this a contagious/lethal disease I should be worried about? I've had the crayfish colony for a couple years now and this is the first time I've seen it on a crayfish. It doesn't seem to be getting bigger or smaller with time. See pics below, thanks!

[Opaela]

opae ula growing on a crawlfish.

[ssdarling]

Very strange. It looks like a bacterial infection to me. Might want to dose some medication to be on the safe side. A good place to start would be a sulfa drug.

[Dch48]

It might disappear when the cray molts.

[mk575]

opae ula growing on a crawlfish.

What??

[mk575]

Very strange. It looks like a bacterial infection to me. Might want to dose some medication to be on the safe side. A good place to start would be a sulfa drug.

Alright, that's what I suspected. Thank you!