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Gobiiformes (Gobies) >
Microdesmidae (Wormfishes) > Ptereleotrinae
Etymology: Navigobius: Name from Latin ' navi' meaning to float or swim, an allusion to the swimming habits of the species.; vittatus: Name from Latin 'vittatus' for blue stripes on the dorsal fins..
Environment: milieu / climate zone / depth range / distribution range
Ecologie
marien rifbewoner; diepte 25 - 31 m (Ref. 105381). Tropical
Verspreiding
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Western Pacific: Brunei Darussalam.
Grootte / Gewicht / Leeftijd
Maturity: Lm ? range ? - ? cm
Max length : 2.3 cm SL mannelijk / geslacht onbekend; (Ref. 105381)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Dorsale stekels (totaal) : 7; Dorsale zachte stralen (totaal) : 11 - 13; Anale stekels: 1; Anale zachte stralen: 10 - 12; Wervels: 26. This species is distinguished by the following characters: D VI + I,11-13 (rarely 13), the spines of first dorsal fin with protruding filaments; A I,10-12 (rarely 12); pectoral-fin rays 18-19; scales in longitudinal series 52-58; total gill rakers on first arch 15-16; segmented caudal-fin rays 17; branched caudal-fin rays 11; forked caudal fin with filament on upper and lower lobe; no preopercular pores; interorbital pores paired; colour in life semi-translucent grey with yellowish hue; with short yellow stripe on snout and from upper eye to pectoral-fin base; blue stripe from mid-interorbital to first dorsal-fin origin; dorsal fins are translucent with yellowish hue, both dorsal fins have prominent basal and submarginal blue stripes; caudal fin yellowish to yellow-brown with blue upper and lower margins (Ref. 105381).
Form loose aggregations of 10-50 individuals, observed hovering 50-100 cm above the substrate on a very gradual but strongly current-swept sand and rubble slope in 28-31 m depth. Collection reef with visibility invariably quite low (5-8 m maximum) and where there was frequently a minor thermocline at the 20-25 m depth range, with the fish exposed to moderately cooler temperatures down to 27°C. When approached too closely, individuals would dive into burrows in the sand, sometimes individually but also multiple individuals entering the same burrow (Ref. 105381).
Levenscyclus en paargedrag
Maturities | Voortplanting | Spawnings | Egg(s) | Fecundities | Larven
Allen, G.R., M.V. Erdmann and N.K.D. Cahyani, 2015. Navigobius vittatus, a new species of dartfish (Gobiidae: Ptereleotrinae) from Brunie Darussalam. J. Ocean Sci. Found. 17:12-21. (Ref. 105381)
Status op de Rode Lijst van het IUCN (Ref. 130435)
Gevaar voor de mens
Harmless
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Estimates based on models
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.7500 [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).
Trofisch niveau (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
