Dark spot top of crayfish's leg

Pterrys Mom

Feeder Fish
MFK Member
Mar 28, 2017
5
0
1
54
Wakefield, RI
Pterry molted about 4 weeks ago, and since then, I started noticing a small dark spot on the undercarriage in front of his back left leg. It has been getting progressively bigger. I think that leg seems to be not doing as much as it used to. The local pet store did not recommend a salt bath like you would do for shell rot. I'm attaching a picture. Has anyone seen this? Solution?IMG_1512.JPG IMG_1512.JPG IMG_1512.JPG

IMG_1520.JPG
 
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