Actinopteri (ray-finned fishes) > Gobiiformes
(Gobies) > Gobiidae
(Gobies) > Sicydiinae
Etymology: Sicyopterus: Greek, sika, sikya = cucumber + Greek, pteron = wing, fin (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal. Tropical
Oceania: endemic to the Marquesas Islands. Type locality: Hiva Oa, Atuona River.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 9.9 cm SL male/unsexed; (Ref. 12767)
Morphology | Morphometrics
Characterised by a superior lip edge slightly nothched in between the three notches which are not very marked; a black line in between the middle of the eye and the grin; tiny scales on the anterior part of the body and the nape; 66 to 70 lateral scale rows; a black oval spot at the base of the caudal rays and at the tip of the caudal fin in male.
Head rounded; snout profile clearly convex; maxilla reaching or almost reaching the anterior edge of the eye. Superior lip with a median notch and a lateral one on each side at the nostril level; edge of the lip very finely notched. Two close dorsal fins, the third spine of the first dorsal is elongated, especially in males; pelvic fins joint in one oval disc, free from the abdomen, at the back of the pelvic plate (Ref. 12767).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Maugé, L.A., G. Marquet and P. Laboute, 1992. Les sicydiinae (Gobiidae) des eaux douces de la Polynésie Française. Description de trois espéces nouvelles. Cybium 16(3):213-231. (Ref. 12767)
IUCN Red List Status (Ref. 125652)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture 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
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).