I could have swore I had a disagreement with someone on here before about the homozygous spider thing, but can't seem to find the post. I've never accepted the homozygous lethal thing though. Also, anytime you see someone list spider as a dominant mutation instead of incompletely dominant or co-dominant, they are implying they don't believe it is homozygous lethal either.

Also, very cool about that pearl. Did it seem to have any neurological issues, such as spider wobbling? I am curious because what I read about pearls suggested they normally had severe neurological problems that typically resulted in death. This one could be exceptional, or one of the other mutations in it may stop whatever is typically fatal in pearls alone. Regardless, cool little animal, and thanks for posting pics of it!