HomeFish encyclopediaRay-finned fishesMulletsMulletsSand grey mullet Sand grey mullet (Myxus elongatus) Scientific name: Myxus elongatus G?nther, 1861 The Sand grey mullet (Myxus elongatus) is a freshwater fish of the family Mugilidae. Native range: Southwest Pacific, Australia including the Lord Howe and Norfolk islands. Probably also the southern extreme of Queensland. BiologyDorsal spines (total): 4; Anal spines: 3; Anal soft rays: 9. Dark olive-green or reddish brown dorsally, greenish wash on upper flanks, lower flanks silvery. Gold blotch on operculum. Golden-yellow iris around dark eye. Fins greenish brown, except anal fin with white margin. Black spot at base of pectoral fin.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMyxus elongatusFamilyMugilidae (Mullets)OrderMugiliformes (Mullets)ClassActinopterygii (Ray-finned fishes)Maximum length40.0Common length20.0Depth range1–10 m (3–33 ft)EnvironmentMarine; freshwater; brackish; reef-associated; catadromous; depth range 1 - 10 mClimateTemperateDistributionSouthwest Pacific: Australia including the Lord Howe and Norfolk islands. Probably also the southern extreme of Queensland.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026