My god, my apologies, i had forgotten on just how important even the teeth were to find a species!So, I still need to finish looking through the other Gymnothorax species (I put it off because it's the largest genus), but if it has pebble teeth instead of fang teeth, possibly Echidna delicatula?
Also, how long is the eel?
It is indeed a pebble tooth, I managed to find one picture of the delicatula on inaturalist but it didn't look similar
The eel is, i believe to be approximately 22 inches in length