Actinopteri (ray-finned fishes) > Syngnathiformes
(Pipefishes and seahorses) > Syngnathidae
(Pipefishes and seahorses) > Syngnathinae
Etymology: Micrognathus: Greek, mikros = small + greek, gnathos = jaw (Ref. 45335). More on author: Bleeker.
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range - 10 m (Ref. 48635), usually - m (Ref. ). Tropical; 0°C - ; 35°N - 25°S, 32°E - 167°W
Indo-Pacific: East Africa and Red Sea to Samoa, north to southern Japan, south to Tonga; Belau, to the eastern Caroline and Mariana Islands in Micronesia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 8.5 cm TL male/unsexed; (Ref. 48635)
Inhabits tide pools, reef flats, and shallow sand flats among algae or seagrasses to a depth of 5 m or more. 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).
Myers, R.F., 1991. Micronesian reef fishes. Second Ed. Coral Graphics, Barrigada, Guam. 298 p. (Ref. 1602)
IUCN Red List Status (Ref. 124695)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 25.1 - 29.3, mean 28.2 °C (based on 2065 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00037 (0.00016 - 0.00086), b=3.18 (2.99 - 3.37), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.2 ±0.4 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.).
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .
Nutrients (Ref. 124155
): Calcium = 232 [121, 493] mg/100g ; Iron = 1.1 [0.7, 1.9] mg/100g ; Protein = 18.5 [17.3, 19.8] % ; Omega3 = 0.141 [0.078, 0.267] g/100g ; Selenium = 33.7 [15.7, 74.5] μg/100g ; VitaminA = 63.1 [19.8, 197.0] μg/100g ; Zinc = 1.96 [1.29, 2.97] mg/100g (wet weight);