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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 fishes; emarginata: Name 'emarginata' from the Latin word meaning 'notched', in reference to the notched caudal fin of the new species.
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.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
marino associati a barriera corallina; distribuzione batimetrica 18 - 24 m (Ref. 138626). Tropical
Western Central Pacific: Papua New Guinea.
Dimensione / Peso / Età
Maturità: Lm ?  range ? - ? cm
Max length : 1.1 cm SL maschio/sesso non determinato; (Ref. 138626); 1.2 cm SL (female)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 7; Raggi dorsali molli (totale) : 9 - 10; Spine anali: 1; Raggi anali molli: 9 - 10. This species is distinguished from its congeners by the following set of characters: dorsal rays VI + I,9-10; absence of elongate spinesp; posteriormost rays of second dorsal fin not reaching caudal fin base when adpressed; anal rays I,9-10, longest rays in middle of fin; pectoral rays 15; absence of pelvic frenum; absence of cephalic sensory canals and associated pores; total longitudinal scales 18-21, median row interrupted below first dorsal fin by scaleless gap; main mass of body scales extending forward from caudal-fin base to below middle of second dorsal fin; colour in alcohol pale yellowish or tan with very few, widely-scattered dark melanophores on head and side of body, largest and most conspicuous on opercle and frontal region; and fins mainly translucent except male holotype with black submarginal stripe on anal fin, and inconspicuous black spotting on pelvic fins and outer portion of dorsal and anal fins of female (Ref. 138626).
Body shape (shape guide): elongated; Cross section: oval.
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Allen, G.R. and M.V. Erdmann, 2024. Appendix: Descriptions of twenty-four new species of reef fishes from the East Indian region. pp. 1270-1367. In Reef Fishes of the East Indies (2nd ed., Vol. 3). Tropical Reef Research. (Ref. 138626)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Strumenti
Rapporti speciali
Scarica XML
Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00741 (0.00346 - 0.01589), b=3.09 (2.91 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Livello trofico (Fonte Biblio. 69278) |
2.9 ±0.3 se; based on size and trophs of closest relatives |
Resilienza (Fonte Biblio. 120179) |
Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.). |
Vulnerabilità della pesca (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |