A new dwarf species of moray taken in the western Pacific and Indian Oceans, Gymnothorax robinsi, is described. It is distinguished from other species of Gymnothorax by its small size (largest specimen 182 mm), its color pattern (usually brown with small irregular white
spots, the fins with oblique dark and white bars), and its low vertebral count (total vertebrae 105–112). It exhibits sexual dimorphism in dentition, the jaw teeth of females biserial and numerous, those of males uniserial and fewer.
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