Sicyopterus longifilis, Threadfin goby

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Sicyopterus longifilis de Beaufort, 1912

Threadfin goby
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Sicyopterus longifilis
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Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > 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 Ecology

Marine; freshwater; brackish; demersal; amphidromous (Ref. 51243). Tropical; 19°N - 6°S

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Asia: Japan, the Philippines, Indonesia; and Papua New Guinea.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 9.7 cm TL male/unsexed; (Ref. 7050)

Short description Morphology | Morphometrics

Dorsal spines (total): 7; Dorsal soft rays (total): 10. This species is distinguished by the following characters: upper lip with no median cleft, but with a lateral cleft on each side of lip; margin of upper lip between lateral clefts minutely serrated; no tubercle behind median cleft; ridge beneath the upper lip only with feeble papillae; premaxillary teeth tricuspid; first dorsal-fin spines, especially second to fifth spines, are long and filamentous in males; posterior tip of first dorsal fin often exceeding the base of last soft ray of second dorsal fin in males, while the second to fourth spines of first dorsal fin in females are somewhat elongate, but the tip of fin not extending to middle of second dorsal-fin base; membranes notched between spines in female; D I,10; caudal fin with 17-18 (usually 17) segmented rays, including 15-16 branched rays; pectoral fin rays 20-21; scales in longitudinal series 49-57; scales on nape and occipital region considerably smaller than scales on lateral sides of body (Ref. 125665).

Biology     Glossary (e.g. epibenthic)

Lives in coastal streams with moderate to fast flow (Ref. 2847). Usually found in small. clear creeks, often in rainforest within about 50 km of the sea (Ref. 2847).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Maeda, K. and T. Saeki, 2018. Revision of species in Sicyopterus (Gobiidae: Sicydiinae) described by de Beaufort (1912), with a first record of Sicyopterus longifilis from Japan. Species Diversity 23:253-262. (Ref. 125665)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 21 January 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

More information

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Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), 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).