Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Gobiidae
(Gobies) > Sicydiinae
Etymology: Sicyopus: Greek, sika, sikya = cucumber + Greek, pous = foot (Ref. 45335); exallisquamulus: From the Greek exallos, meaning special, distinguishing, and the Latin squamulus, meaning diminutive form for scales, in reference to the small and sexually dimorphic scales found on the abdomen.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal. Tropical
Asia: Island od Halmahera in Maluku, Indonesia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 5.1 cm SL male/unsexed; (Ref. 57053)
Morphology | Morphometrics
soft rays: 9 - 10. Pectoral fin with 14-15 rays. Both sexes with small widely spaced scales ventral to first dorsal fin, ctenoid in male, cycloid in female. Both sexes with lobes associated with urogenital papilla. In male, first dorsal fin with spines 3 and or 4 sometimes filamentous (Ref. 57053).
Inhabits swift, clear high gradient streams with rocky and boulder strewn bottom (Ref. 57053).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Watson, R.E. and M. Kottelat, 2006. Two new freshwater gobies from Halmahera, Maluku, Indonesia (Teleostei: Gobioidei: Sicydiinae). Ichthyol. Explor. Freshwat. 17(2):121-128. (Ref. 57053)
IUCN Red List Status (Ref. 119314)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5010 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01096 (0.00423 - 0.02842), b=3.03 (2.81 - 3.25), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (12 of 100) .