Narrow-Headed Puffer

Sphoeroides angusticeps

The narrow-headed puffer, Sphoeroides angusticeps, is a unique species of pufferfish found exclusively in the tropical waters of the Galapagos Islands. Divers can encounter this species at depths ranging from 5 to 20 meters, where it inhabits mixed areas of sand, gravel, and boulders. With a maximum length of 25 cm, the narrow-headed puffer is characterized by a short and deep body that can inflate as a defense mechanism. Its dorsal fin is supported by 8 soft rays, while the anal fin has 7 soft rays, and it lacks spines on both fins. This pufferfish is diurnal, spending its days hovering just above the substrate. At night, it buries itself in the sand, likely as a means of protection. The narrow-headed puffer is classified as Least Concern by the IUCN. Divers exploring the Galapagos might find this species to be a curious and interesting subject, often seen alone rather than in schools.