Possible shell rot??

[Sb092]

I have a video I will try to post. I am curious if the black spots that have shown up are shell rot?
I have had my vanilla/snow white lobster for a almost a year. In the beginning he woulf be all over eating everything in sight. He grew to what is probably full grown. Then he would usually only come out at night. I did catch him out one night and noticed the black spots. I believe he will be molting again soon since his appetite has really picked up and he out during the early morning hours and I have been offering more algae wafers because he is eating them. I have done some research and from what I have found on this, sometimes molting will help, and other than that no cure.
Does this look like rot?

 

[Fishfur]

The shell isn’t actually rotting, though that’s a common name for this and unfortunately it’s not at all clear what causes it. Both bacteria, fungi and oomycetes have been implicated in research, which is all done on food species of course, not species kept by hobbyists.

It is not usually fatal but in older crayfish it can sometimes result in death.

The dark colour of the spots is due to the deposition of melanin. Moulting often will result in most of all of it disappearing but it’s not a guarantee.

But you’re right that there is no treatment.

 

[Sb092]

Update: Zoidberg did go through another molt. He was out this evening and is definitely bigger, ALL spots are gone. I trued to snap pics, but ge ran as soon as the phone came to glass. These are the best pics I could get.

 

[Fishfur]

Sounds promising - let’s hope all is well from now on.