whats going on with my manderian???

[Hbohi]

So I just got him 2days ago and I noticed this on him.





What is it and how do I treat it

 

[Hbohi]

Btw the algae is now gone

 

[HumbleFish]

Looks like maybe a cut/bite/sting. Hopefully it heals on it's own. If it spreads or starts looking worse, it may be an infection requiring antibiotics. Which you would need to do in QT.

 

[RAG_83]

It looks like he hurt himself on the rock

 

[Hbohi]

He did dart under a rock...I'll keep on eye on it to make sure it doesn't spread