Paramonacanthus Matsuurai (Paramonacanthus matsuurai), first described by Hutchins, 1997 is a small fish in the family Monacanthidae (order Tetraodontiformes). Adults typically reach 10.60 cm in maximum length. It inhabits marine coastal and open-ocean environments. It occurs in Temperate waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus. On the IUCN Red List, it is classified as Data Deficient.
Dorsal spines (total): 2; Dorsal soft rays (total): 29; Anal spines: 0; Anal soft rays: 28 - 29; Vertebrae: 19. Prominent hump just anterior to nostrils absent. Soft dorsal fin in males has the second ray slightly elongated and filamentous. Long caudal fin, its length equal to the head length. A broad dark stripe on the outer margin of the anal fin in male, its width greater than that of the pupil .: short and / or deep; Cross section: compressed.
Behavioural data for Paramonacanthus Matsuurai is currently being reviewed.
Marine; demersal. Temperate Northwest Pacific: Ogasawara Islands to south of Japan.
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