Klassifizierung / Names
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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.
Umwelt: Milieu / Klimazone / Tiefenbereich / Verbreitungsgebiet
Ökologie
seewasser riff-verbunden; tiefenbereich 18 - 24 m (Ref. 138626). Tropical
Western Central Pacific: Papua New Guinea.
Größe / Gewicht / Alter
Geschlechtsreife: Lm ?  range ? - ? cm
Max length : 1.1 cm SL Männchen/unbestimmt; (Ref. 138626); 1.2 cm SL (female)
Kurzbeschreibung
Bestimmungsschlüssel | Morphologie | Morphometrie
Rückenflossenstacheln (insgesamt) : 7; Rückenflossenweichstrahlen (insgesamt) : 9 - 10; Afterflossenstacheln: 1; Afterflossenweichstrahlen: 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.
Lebenszyklus und Paarungsverhalten
Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fruchtbarkeit | Larven
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)
IUCN Rote Liste Status (Ref. 130435: Version 2025-2 (Global))
Bedrohung für Menschen
Harmless
Nutzung durch Menschen
Tools
Zusatzinformationen
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Internet Quellen
Schätzungen auf der Grundlage von Modellen
Phylogenetischer Diversitätsindex (Ref. 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). |
Trophische Ebene (Ref. 69278) |
2.9 ±0.3 se; based on size and trophs of closest relatives |
Widerstandsfähigkeit (Ref. 120179) |
hoch, Verdopplung der Population dauert weniger als 15 Monate. (Preliminary K or Fecundity.). |
Anfälligkeit der Fischerei (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |