Teleostei (teleosts) > Gobiiformes
(Gobies) > Gobiidae
(Gobies) > Sicydiinae
Etymology: Stiphodon: Greek, stiphos, -eos, -oys = mass + Greek, odous = teeth (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Marine; freshwater; brackish; demersal; amphidromous (Ref. 82685). Subtropical
Asia: Ryukyu Islands and Taiwan. Oceania: Guam, Mariana Islands and Babelthuap, Palau.
Length at first maturity / Size / Weight / Age
Maturity: Lm 2.0  range ? - ? cm
Max length : 3.7 cm SL male/unsexed; (Ref. 28731); 4.2 cm SL (female)
Adults inhabit small, clear streams with rocky bottoms usually covered with dense mats or clumps of algae (Ref. 28731). This species produces small pyriform eggs, laid on the undersurfaces of stones in freshwater streams. Newly hatched larvae are small (0.12-0.13 cm in notochord length) and poorly developed. These migrate downstream to the sea shortly after hatching at dusk, where they develop as pelagic larvae for 2.5-5 months. Pelagic larvae may potentially disperse to distant islands before migrating to freshwater streams when they reach 1.3-1.4 cm standard length (SL) where they grow further and reproduce (Ref. 95104).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Watson, R.E and I.-S. Chen, 1998. Freshwater gobies of the genus Stiphodon from Japan and Taiwan (Teleostei: Gobiidae: Sicydiini). aqua, J. Ichthyol. Aquat. Biol. 3(2):55-66. (Ref. 28731)
IUCN Red List Status (Ref. 126983)
Threat to humans
for Stiphodon percnopterygionus' title='Reproduction
for Stiphodon percnopterygionus' target='_blank'>ReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
for Stiphodon percnopterygionus' title='Aquaculture profile
for Stiphodon percnopterygionus' target='_blank'>Aquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82804
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), in cm total length, based on all LWR estimates for this body shape (Ref. 93245
Generation time: 0.7 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies.
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (tm=0.5; tmax<2;).
Fishing Vulnerability (Ref. 59153
): Low vulnerability (10 of 100).