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; brackish; demersal; depth range - m (Ref. ), usually - m (Ref. ). Subtropical; 0°C -
Oceania: French Polynesia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 7.5 cm SL male/unsexed; (Ref. 12759)
Morphology | Morphometrics
soft rays: 10. Distinguished from congeners by a low number (approximately 45) of teeth on each premaxilla, and ventral body surface unscaled in largest adults; interspinal membrane or frenum thick; branched caudal-fin rays 13-15; vertebrae 10+16=26; no rakers on first gill arch; transverse scales 44-62 rows; unscaled dorsal surface of head; operculum, cheeks and lateral portion of body to first dorsal fin irregularly scaled with small cycloid scales; ventral surface of body unscaled in largest adults, otherwise incompletely covered with small cycloid scales; remainder of body to caudal peduncle covered with imbricate ctenoid scales; anterior portion of caudal fin rays with smaller ctenoid or cycloid scales in one or two discrete rows dorsal and ventral to each ray (Ref. 12759).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Parenti, L.R. and J.A. Maciolek, 1996. Sicyopterus rapa, new species of sicydiine goby (Teleostei: Gobiidae), from Rapa, French Polynesia. Bull. Mar. Sci. 58(3):660-667. (Ref. 12759)
IUCN Red List Status (Ref. 124695)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 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.).
Vulnerability (Ref. 59153
): Low vulnerability (19 of 100) .