blackedge morays

[rubensito]

i've noticed that sources make reference to about 3 species that get referred to as blackedge (saxicola, ocellatus, and nigromarginatus?). so
I was trying to ask if anyone knows or has info on differentiating them physically and/or behaviorally. I had kept a blackedge in the past for some time and recently acquired a new one and was curious about this

 

[saltyguy51]

I thought the real Blackedge's are from the Carribbean or the Keys, I had one once and wow what a aggressive eater

 

[rubensito]

all three of the species listed are Caribbean/Western Atlantic. My issue is whether there's a way for the layman to distinguish between them if you have a blackedge