Lepthoplosternum stellatum is a species of freshwater ray-finned fish belonging to the family Callichthyidae and the subfamily Callichthyinae, the armoured catfishes. This species is so far known from the type locality only, the Igarapé Repartimento, a tributary of the mouthbay lake, Tefé Lake, some 6 km south of the town of Tefé, Amazonas, Brazil.

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