Varicus adamsi, Twilight goby

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Varicus adamsi Gilmore, Van Tassell & Tornabene, 2016

Twilight goby
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drawing shows typical species in Gobiidae.

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

Teleostei (teleosts) > Gobiiformes (Gobies) > Gobiidae (Gobies) > Gobiinae
Etymology: Varicus: Latin, varix = dilated vein (Ref. 45335);  adamsi: Named for Mr. Michael Adams, famed research submersible pilot (Ref. 113825).

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; demersal; depth range 165 - 435 m (Ref. 113825). Tropical

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

Western Central Atlantic: Bahamas and Tobago.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 6.0 cm SL male/unsexed; (Ref. 113825)

Short description Morphology | Morphometrics

This species can be distinguished by the following set of characters: D1 VII, no elongate spine; D2 I, 9; A I, 8; pectoral fin extending to 3rd element of D2 fin; pelvic fins well separated, 5th ray one-quarter length of 5th ray, rays 1-4 branched several times with spatulate, fleshy tips; presence of ctenoid scales on the side of the body, from caudal peduncle to pectoral-fin base, ctennii reduced or lacking anteriorly; 6-7 very enlarged ctenoid scales on caudal peduncle; 2 modified basicaudal scales with enlarged ctenii on dorsal and ventral margins of caudal-fin base; papillae rows 5s and 5i connected as a continuous transverse row; interorbital papillae row pc’ with two papillae; cephalic lateralis pores on head or preopercle absent; anterior nostril with dorsal bilobed flap, posterior with simple triangular flap; single anal-fin pterygiophore inserted anterior to haemal arch; pectoral, spinous dorsal and caudal fins with bright white pigment adjacent to black fin margins, body white with 7 prominent yellow stripes situated under eye, on cheek, behind opercular margin, below middle of dorsal fin, below origin of second dorsal fin, below middle of second dorsal fin, and on posterior margin of caudal peduncle (Ref. 113825).

Biology     Glossary (e.g. epibenthic)

Collected in an area consists of limestone outcroppings and boulders with an occasional thin layer of calcareous oolite sands and Halimeda spp. algal rubble (Ref. 113825).

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

Main reference Upload your references | References | Coordinator | Collaborators

Tornabene, L., J.L. Van Tassel, D.R. Robertson and C.C. Baldwin, 2016. Molecular phylogeny, analysis of discrete character evolution, and submersible collections facilitate a new classification for a diverse group of gobies (Teleostei: Gobiidae: Gobiosomatini: Nes subgroup), with descriptions of nine new species. Zoological Journal of the Linnean Society 177(4):764-812. (Ref. 113825)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 09 October 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

FAO - Publication: search | FishSource |

More information

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Common names
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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 = No PD50 data   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00708 (0.00333 - 0.01504), b=3.09 (2.92 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.3   ±0.3 se; based on size and trophs of closest relatives
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).