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; nigrifasciata: Name 'nigrifasciata' from the Latin word meaning 'black-striped', in reference to the basal black stripe on the dorsal fins 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 ? - 45 m (Ref. 138626). Tropical
Eastern Indian Ocean: Indonesia.
Größe / Gewicht / Alter
Geschlechtsreife: Lm ?  range ? - ? cm
Max length : 1.7 cm SL Männchen/unbestimmt; (Ref. 138626); 1.8 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 (usually 10), absence of elongate spines; anal rays I,9-10 (usually 10); pectoral rays 16-17 (usually 17); absence of pelvic frenum; absence of cephalic sensory canals and associated pores; total longitudinal scales 23-26 (mean 24), median row either continuous from behind pectoral-fin base to caudal-fin base or interrupted below first dorsal fin by scaleless gap; main mass of body scales extending forward from caudal-fin base to below anterior portion of second dorsal fin; colour in alcohol pale yellowish and mainly unmarked except three widely spaced, tiny brown spots or horizontally elongate streaks in mid-lateral row on side of body; clusters of melanophores on side and frontal region of head, and numerous, minute white spots covering abdominal region; fins semi-translucent except dorsal fins with pair of blackish basal stripes (merging to form broad, solid stripe on posterior half of first-dorsal fin); additional, narrow, poorly defined dark stripes on middle and outer portion of dorsal fins; and dense network of microscopic, brownish striations, giving overall dusky appearance to membranes of caudal, anal, and pelvic fins (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) |
3.0 ±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). 🛈 |