Long-fin butterfly clingfish (Propherallodus longipterus) is a ray-finned fish. It inhabits marine (saltwater) waters in benthic environments. This species can reach a maximum total length of 2.3 cm. With a trophic level of 3.2, 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): 8 - 9; Anal soft rays: 8; Vertebrae: 34. This species is distinguished from its congeners by the following set of characters: D 8-9; A 8; pectoral-fin rays 23-24; vertebrae 34; in lateral view, the upper end of gill membrane in level with 7th or 8th pectoral-fin ray base; posterior nostril slightly behind anterior margin of eye; head is moderate, its length 30.3-32.1% SL; disc moderately sized, its length 19.4-21.5% SL; caudal peduncle moderately deep, 8.7-9.7% SL, 1.5-1.8 in caudal-peduncle length; dorsal- and anal-fin bases are long, 14.8-17.8 and 15.7-17.3% SL, respectively; pre-dorsal-fin length 66.8-69.0% SL; dorsal-caudal length 31.1-31.8% SL .: elongated; Cross section: circular.
Behavioural data for Long-fin butterfly clingfish is currently being reviewed.
Diet information for Long-fin butterfly clingfish is currently being compiled.
Reproduction data for Long-fin butterfly clingfish is currently being compiled.
Marine; demersal. Tropical West Pacific: the Philippines.
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