Teleostei (teleosts) >
Gobiiformes (Gobies) >
Gobiidae (Gobies) > Sicydiinae
Etymology: Sicyopus: Greek, sika, sikya = cucumber + Greek, pous = foot (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; benthopelagic. Tropical
Oceania: northern New Guinea and the islands of New Hanover and Bougainville in Papua New Guinea.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 3.0 cm SL male/unsexed; (Ref. 26726); 3.4 cm SL (female)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 6 - 7; Dorsal soft rays (total): 9; Anal spines: 1; Anal soft rays: 9. Male with 6 spines in first dorsal fin, female with 5; pectoral rays almost always 15; dusky to blackish band extending midlaterally from behind pectoral base to below origin of second dorsal fin in male and ending as a small spot at hypural base in female; in life male with lower two thirds of body between second dorsal and anal fins, and caudal peduncle bright red.
Body shape (shape guide): fusiform / normal.
Inhabits clear, swift, high gradient streams with bottom of boulders and gravel at elevations of 350 m and 500 m.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Watson, R.E., 1995. A new species of Sicyopus from Papua New Guinea with a redescription of Sicyopus multisquamatus (Teleostei: Gobiidae: Sicydiinae). Ichthyol. Explor. Freshwat. 6(3):267-278. (Ref. 26726)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5005 [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).
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