Grallenia dimorpha

Grallenia dimorpha Allen & Erdmann, 2017

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Grallenia dimorpha
Male Afbeelding van Allen, G.R. & M.V. Erdmann

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> Gobiiformes (Gobies) > Gobiidae (Gobies) > Gobiinae
Etymology: Grallenia: Named for Gerald R. Allen, (G+R+Allen+suffix '-ia'), in honor of his great contribution to our knowledge of the diversity of coral-reef fishesdimorpha: Name from Latin 'dimorpha' meaning 'two shapes'; referring to the sexual dimorphism in relation to dorsal-fin shape; treated as a feminine singular adjective.
Eponymy: Dr Gerald Ray Allen (d: 1942) The genus was named to honour “…his great contribution to our knowledge of the diversity of coral-reef fishes.” (See Allen, GR) (Ref. 128868), visit book page.

Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied Ecologie

marien rifbewoner; diepte 8 - 18 m (Ref. 116128). Tropical

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Western Pacific: Papua New Guinea.

Grootte / Gewicht / Leeftijd

Maturiteit: Lm ?  range ? - ? cm
Max length : 1.5 cm SL mannelijk / geslacht onbekend; (Ref. 116128); 1.6 cm SL (female)

Korte beschrijving Determinatiesleutels | Morfologie | Morfometrie

Dorsale stekels (totaal) : 7; Dorsale zachte stralen (totaal) : 8 - 11; Anale stekels: 1; Anale zachte stralen: 9 - 11; Wervels: 27. This species is distinguished by the following characters: D VI + I,8-11 (usually 10); A I,9-11 (usually10); fully erect first dorsal fin of male differs from female, male fin rectangular with fifth spine longest and female fin triangular with first spine forming elongate filament; no pelvic frenum nor head pores; longitudinal scales 25-30, often continuous from posterior pectoral-fin base to caudal-fin base, but anterior half of body mainly scaleless; body depth at pelvic-fin origin 13.4-15.6% SL; colour of male in life translucent with a mid-lateral row of five widely separated and progressively shorter posteriorly, horizontal, orange-brown lines, each surrounded by yellowish hue and with a faint, narrow, vertical, brown line extending ventrally, forming overall T-shaped marking; dorsal fins with a pair of prominent stripes, the outermost relatively broad and yellow-orange, inner stripe situated just above fin base, narrower and orange-red with black margin; anal fin yellowish with distinctive black margin; caudal fin is yellowish with irregular translucent areas mainly on upper part of basal half; female similar, but fins translucent without both the distinctive stripes on dorsal fins and black margin on anal fin; series of five ovate, progressively smaller, brown blotches along lower side interspersed with brilliant white markings, beginning at pectoral-fin base, continuing to posterior caudal peduncle (Ref. 116128).
Body shape (shape guide): elongated.

Biologie     Verklarende woordenlijst (bv. epibenthic)

Lives on sandy substrate (Ref. 116128).

Levenscyclus en paargedrag Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven

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Allen, G.R. and M.V. Erdmann, 2017. Descriptions of five new species of marine gobies (Teleostei: Gobiidae) of the genus Grallenia) from the tropical western Pacific Ocean. J. Ocean Sci. Found. 27:20-47. (Ref. 116128)

Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))

  Niet bedreigd (LC) ; Date assessed: 19 March 2024

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Harmless





Gebruik door de mens

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Schattingen op basis van modellen

Fylogenetische diversiteitsindex (Ref. 82804):  PD50 = 0.5020   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00741 (0.00347 - 0.01582), b=3.09 (2.91 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trofisch niveau (Ref. 69278):  3.0   ±0.3 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref. 120179):  Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.).
Kwetsbaarheid van de visserij (Ref. 59153):  Low vulnerability (10 of 100). 🛈