Esral'sa'Nikto, or Mountain Nikto, were a Nikto subspecies adapted to the variable climate of the mountains of Kintan. They had large facial fins which were used for heat regulation. These fins also improved the Esral'sa'Nikto's hearing. Their skin was blue-gray, and they had neither horns nor breathing tubes, though they did have a covered nose similar to the Kajain'sa'Nikto.