Roughspine triangular batfish (Malthopsis asperata) is a ray-finned fish of the family Ogcocephalidae. It inhabits marine (saltwater) waters in pelagic environments. This species can reach a maximum total length of 7.5 cm. It occurs at depths between 183 and 670 metres. With a trophic level of 3.3, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Least Concern on the IUCN Red List.
Dorsal soft rays (total): 5 - 6; Anal soft rays: 4. This species is distinguished by the following characters: having stout principal bucklers with prominent spines; D 5-6; pectoral-fin rays 12; ventral surface with small bucklers and minute prickles; subopercular buckler have 3 small spinelets: one directed forward, another outward and third backward; few blunt spinelets on its margin; interspaces of principal bucklers covered with small buckler and prickles; pointed rostral spine, directed forward and upward .: other (see remarks); Cross section: flattened.
Behavioural data for Roughspine triangular batfish is currently being reviewed.
Marine; pelagic-oceanic; depth range 183 - 670 m . Subtropical Pacific Ocean: tropical; seamounts off Australia, New Caledonia, and New Zealand.
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