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Abstract
Marbled eel (Anguilla marmorata Quoy & Gaimard, 1824) is remarkable with a wider distribution and higher economic value. Data on spatial and temporal distribution were collected at 2 estuaries, 1 lagoon and 4 rivers in Thua Thien Hue province during the period from November 2018 to November 2019. Our results indicated an annual distribution of the marbled eel with the total length (TL) ranging 120 – 1,137 mm in all water bodies with the eastward currents. The temporal distribution of the marbled eel was divided into two seasons associated with the migration characteristics of the species. The dry season is from January to July, at which the juveniles (TL < 200 mm) migrated from the sea into the hinterland; and the rainy season from August to December, corresponding to the spawning migration season of the adult fish. Spatially, we found an annual distribution of the marbled eel (TL < 200 mm) in the middle and upstream of the rivers whilst the downstream was recorded with the eel at the migrating phase. This study provides important evidences to develop the strategies of effective exploitation and conservation of the marbled eel in Thua Thien Hue and Vietnam.