3 Mariana Islands species out of 5 reported | 4 Indo-Pacific species
Diodon holocanthus (Anilao)
Diodon hystrix
Diodon liturosus (Komodo)
Note: While Diodon holocanthus and D. liturosus have been reported from the Mariana Islands, the individuals above were photographed in the Philippines and Indonesia, respectively. I have not yet observed these species in the waters around Guam.
Additional porcupinefish species reported from the Mariana Islands by Myers and Donaldson (2003):