HomeFish encyclopediaRay-finned fishesEels and MoraysWorm or spaghetti eelsLesser thrush eel Lesser thrush eel (Moringua microchir) Scientific name: Moringua microchir Bleeker, 1853 The Lesser thrush eel (Moringua microchir) is a brackish-water fish of the family Moringuidae. Native range: Indo-West Pacific, East Africa to Samoa, north to the Ryukyus, south to the southern Great Barrier Reef. BiologyVertebrae: 105 - 113. Body depth 36-51 times the total length (TL). Head length 10-15 times TL. Dorsal and anal fins continuous with caudal, clearly behind the anus. Distances from snout to dorsal origin, from snout to anal origin and from snout to anus are 75%, 69% and 67% of TL, respectively. Small pectoral fins. 63 pores along the lateral line from head to anus. Adults all brown on the back and lighter on the belly; juveniles have an orange-yellow back and a bluish belly. Specimens in the rivers can reach 47 cm TL.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMoringua microchirFamilyMoringuidae (Worm or spaghetti eels)OrderAnguilliformes (Eels and Morays)ClassActinopterygii (Ray-finned fishes)Maximum length47.0Depth range3–20 m (10–66 ft)EnvironmentMarine; brackish; reef-associated; depth range 3 - 20 mClimateTropicalDistributionIndo-West Pacific: East Africa to Samoa, north to the Ryukyus, south to the southern Great Barrier Reef.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026