Teleostei (teleosts) >
Beloniformes (Needle fishes) >
Hemiramphidae (Halfbeaks)
Etymology: Hyporhamphus: Greek, hypo = under + Greek, rhamphos = beak, bill (Ref. 45335); naos: Named for the Naos Island, Bay of Panama, where the species is common and the site ot the Smithsonian Tropical Research Institute (STRI) Marine Laboratory.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; brackish; pelagic-neritic; depth range 0 - ? m. Tropical
Eastern Pacific: from Baja California, with strays north to San Diego, CA, south to Paita, Peru and in the Galapagos Islands.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 29.0 cm SL male/unsexed; (Ref. 96012); max. published weight: 74.50 g (Ref. 96012)
Dorsal soft rays (total): 12 - 16. This species is distinguished by the following characters: dorsal and anal fin bases of adults are covered with scales; first gill arch rakers total 29-39, second gill arch rakers total 21-28; pelvic to caudal extension falls anterior to opercle and posterior to upper jaw; for continental population, pelvic to caudal distance usually 0.44-0.47 to SL; preorbital length to orbital diameter usually greater than 0.70 (in 81% of 119 specimens examined) (Ref. 42105).
Body shape (shape guide): elongated.
Inhabits inshore, coastal and estuarine; found along sand beaches, in lower tidal streams and mangroves. Usually encountered in schools at the surface of the water (ref. 42105).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Banford, H.M. and B.B. Collette, 2001. A new species of halfbeak, Hyporhamphus naos (Beloniformes: Hemiramphidae), from the tropical eastern Pacific. Rev. Biol. Trop. 49(1):39-49. (Ref. 42105)
IUCN Red List Status (Ref. 130435: Version 2025-2)
Threat to humans
Harmless
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