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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; larsonae: Named for Helen K. Larson, for her extensive contribution to goby taxonomy and systematics, and who collected and carefully preserved most of the type specimens.
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.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal; depth range 1 - 15 m (Ref. 123066). Tropical
Eastern Indian Ocean: Australia,
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 18.0 cm SL male/unsexed; (Ref. 123066)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 7; Dorsal soft rays (total): 7; Anal spines: 1; Anal soft rays: 7; Vertebrae: 27. This species is distinguished by the following set of characters: D VI+I,6–7; A I,6–8; first dorsal-fin spine not produced into filament; pelvic frenum present; cephalic sensory canals and associated pores present; 22–30 longitudinal scales. Coloration in alcohol is tan with 8 widely spaced, small, brown spots in mid-lateral row on side of the body; faint dark bar of stellate melanophores across anterior cheek; scattered pepper-like melanophores on anterior part of upper opercle It is closely related to Grallenia arenicola from Kashiwa-jima island of southern Japan. This species has relatively fewer scales anterior to the level of the second dorsal fin origin compared with Grallenia arenicola (Ref. 123066).
Cross section: oval.
Specimens were collected using rotenone on sand and rubble bottoms, in habitats ranging from sand flats, isolated coral knolls, reef slopes, and reef edge/fringing reef with scattered corals (Ref. 123066).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Allen, G.R. and M.P. Hammer, 2018. Grallenia larsonae, a new species of sandgoby (Pisces: Gobiidae) from northern Australia. J. Ocean Sci. Found. 31:87-96. (Ref. 123066)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00724 (0.00339 - 0.01546), b=3.10 (2.92 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.5 ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (12 of 100).
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![Image of Grallenia larsonae (Larson\](/images/thumbnails/gif/tn_GOBIIDT0.gif "Image of Grallenia larsonae (Larson\")
