Teleostei (teleosts) >
Gobiiformes (Gobies) >
Gobiidae (Gobies) > Gobiinae
Etymology: Varicus: Latin, varix = dilated vein (Ref. 45335); nigritus: Name from the Latin word for black, in reference to the diagnostic dark black wide bars on the trunk of this species (Ref. 113825).
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal; depth range 244 - ? m (Ref. 113825). Tropical
Western Central Atlantic: Bahamas.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 3.5 cm SL male/unsexed; (Ref. 113825)
Short description
Identification keys | Morphology | Morphometrics
Anal soft rays: 8; Vertebrae: 27. This species can be distinguished by the following set of characters: D1 fin with small filaments extending beyond membrane on spine tips, spines 2-4 nearly equal; D2 I,9; A I,8; P 17, rays 14-15 elongate extending to a vertical through 5th second dorsal-fin ray, past the anal origin to vertical through anal rays 4-5; pelvic fins well separated, all rays unbranched without flattened fleshy tips, long ray extending past anus to anal fin origin; no scales on body of preserved specimen, though small embedded ctenoid scale at D1 fin base; modified basicaudal scales present; papillae rows 5s and 5i connected as a continuous transverse row; interorbital papillae row pc’ and pe’ present; no cephalic lateralis pores on head or preopercle; single anal fin pterygiophore inserted anterior to haemal arch; presence of 7 black stripes from below eye to caudal peduncle (Ref. 113825).
Collected on the shore from a steep rocky slope (45° slope) with thin and sparse calcareous Halimeda rubble layer, mixed with interspersed flat rock outcroppings, hard rock unlayment and scattered rock boulders ca. 1 to 30 m in diameter (Ref. 113825).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
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: Version 2024-1)
Threat to humans
Harmless
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00724 (0.00339 - 0.01546), b=3.10 (2.92 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.2 ±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).
