Hippocampus trimaculatus Leach, 1814
Longnose seahorse
photo by Marine Conservation Cambodia (MCC)

Family:  Syngnathidae (Pipefishes and seahorses), subfamily: Hippocampinae
Max. size:  22 cm TL (male/unsexed)
Environment:  reef-associated; depth range 0 - 100 m, non-migratory
Distribution:  Indo-Pacific: southern India to Japan, Australia and Tahiti. International trade is monitored through a licensing system (CITES II, since 5.15.04) and a minimum size of 10 cm applies.
Diagnosis:  Dorsal spines (total): 0-0; Dorsal soft rays (total): 18-22; Anal spines: 0-0; Anal soft rays: 4-4. Description: (based on 54 specimens): Adult height: 8.0-15.0cm. Rings: 11+40-41 (38-43). Snout length: 2.2 (1.9-2.4) in head length. Dorsal fin rays: 20 (18-22) covering 2+1 rings. Pectoral fin rays: 17-18 (16-19). Coronet: very low, in line with arch of neck, visible as five tiny points. Spines: low and small to slightly raised. Other distinctive characters: very sharp hook-like cheek and eye spines; quite flat in appearance; narrow head; no nose spine. Color pattern: golden orange, sandy colored or totally black; may have large dark spots on the dorsolateral surface of the first, fourth and seventh trunk ring (less visible in dark specimens, and more common in males than females); some specimens ‘zebra striped’ in brown and white.
Biology:  Inhabits gravel or sand bottoms around shallow reefs (Ref. 559); muddy estuaries and near mangroves, tolerating brackish waters (Ref. 48635). Ovoviviparous (Ref. 205). The male carries the eggs in a brood pouch which is found under the tail (Ref. 205).
IUCN Red List Status: Least Concern (LC); Date assessed: 29 September 2016 Ref. (120744)
Threat to humans:  harmless
Country info:   
 

Entered by: Capuli, Estelita Emily - 09.05.96
Modified by: Casal, Christine Marie V. - 13.04.18
Checked by: Capuli, Estelita Emily - 31.05.17

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