Actinopteri (ray-finned fishes) > Syngnathiformes
(Pipefishes and seahorses) > Syngnathidae
(Pipefishes and seahorses) > Syngnathinae
Etymology: Hippocampus: Greek, ippos = horse + Greek,kampe = curvature (Ref. 45335); alatus: From the Latin for winged, in reference to the paired spines on the superior trunk ridges that are directed outward and have broad dermal flaps resembling wings..
This species is a synonym of Hippocampus spinosissimus Weber, 1913 according to Lourie et al., 2016 (Ref. 115213). This species record will be removed.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; non-migratory; depth range 10 - 80 m (Ref. 42735). Tropical
Indo-West Pacific: northern Australia (including Dampier Archipelago, Western Australia) and southeastern Papua New Guinea. Also from the Philippines and Indonesia. International trade is monitored through a licensing system (CITES II, since 5.15.04) and a minimum size of 10 cm applies. Formerly classified as vulnerable in the 2000 IUCN red list of threatened species (Ref. 36508).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 11.7 cm OT male/unsexed; (Ref. 42735); 13.6 cm OT (female)
Morphology | Morphometrics
soft rays: 4. Dorsal fin rays usually 17; trunk rings 11; tail rings 34-36; subdorsal spines 2-3/0-0.5,1,0-0.5, usually enlarged on 11th trunk ring; nose spine absent; spine above eye of moderate length, reaching pupil diameter; lateral head spine large, usually larger than spine above eye; coronet well developed, with 5-7 blunt spines, apex rough and rugose; upper shoulder-ring spine at gill opening; lower shoulder-ring spine low and thick, very broad when single or divided into two rounded tips; superior trunk and tail ridges with enlarged spines, forming laterally directed pairs at regular intervals with 2-3 on trunk and 3-4 on tail, greatly produced in young and least prominent in males; long and sometimes broad dermal flaps, often frilled along edges, on nape, lateral head spines, and enlarged body spines, usually attached posteriorly and just below tip; lateral line with pores on each trunk ring, running just above inferior ridge, continuing on tail to 12th-15th ring (Ref. 42735).
Adults inhabit soft bottom (Ref. 42735, 75154) of the continental shelf (Ref. 75154). Maximum length is based on a straight-line length measurement from upper surface (ignoring spines) of first trunk ring, to tip of tail (Ref. 42735). Ovoviviparous (Ref. 205). The male carries the eggs in a brood pouch which is found under the tail (Ref. 205).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Male carries the eggs in a brood pouch (Ref. 205).
Kuiter, R.H., 2001. Revision of the Australian seahorses of the genus Hippocampus (Syngnathiformes: Syngnathidae) with descriptions of nine new species. Rec. Aus. Mus. 53:293-340. (Ref. 42735)
IUCN Red List Status (Ref. 125652)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 24.5 - 28.8, mean 27.5 °C (based on 434 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00447 (0.00174 - 0.01147), b=3.00 (2.78 - 3.22), in cm total length, based on LWR estimates for this Subfamily-BS (Ref. 93245
Trophic level (Ref. 69278
): 3.4 ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .
Climate Vulnerability (Ref. 125649
): (0 of 100) .