Characidium timbuiense is a fish in the family Crenuchidae. It is native to South America and is found in the Timbuí River basin in Espírito Santo, Brazil.

Size This species reaches a length of .

Etymology The fish's name includes a Latin suffix denoting place, "-ense," and "Timbui" for the Timbuí River basin, in Espírito Santo, Brazil, where the type locality of Córrego Valsungana, a tributary, is located.

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