| Family | Scientific Name | Author | Year | Common Name |
| Muraenidae | Gymnothorax polygonius | Poey | 1875 | Polygon Moray |
All Gymnothorax — Dorsal fin beginning above and near to dorsal-fin origin well-before anus (usually on head). Anal fin beginning just behind anus. Dorsal fin beginning above and before anus. Posterior nostril flush or nearly so with head profile; gill opening with body coloration.
Gymnothorax polygonius
Unique Characters: Teeth not numerous, some long canines; intermaxillary teeth 3 rows across, maxillary teeth in 1 row (few inner teeth in young). Snout and jaws elongate. Teeth slender and smooth, some as very long canines. Color pattern of large pale polygons overlain with small dark spots on pale reticulated background.
Similar Species:
Spotted Moray
Gymnothorax moringa
Purplemouth Moray
Gymnothorax vicinus
Spotted Moray Gymnothorax moringa. Teeth not numerous, some long canines; intermaxillary teeth 3 rows across, maxillary teeth in 1 row (few inner teeth in young). Snout and jaws elongate. Teeth slender and smooth, some as very long canines. Color pattern of small dark spots or blotches on pale background. Contrasting pattern of overlapping small dark spots on pale background.
Purplemouth Moray Gymnothorax vicinus. Teeth not numerous, some long canines; intermaxillary teeth 3 rows across, maxillary teeth in 1 row (few inner teeth in young). Snout and jaws elongate. Teeth slender and smooth, some as very long canines. Color pattern of small dark spots or blotches on pale background. Diffuse pattern of spots and blotches (purplish in life) on pale background.
Gallery