Characidium grajahuense Travassos, 1944
Canivetinho,  Mocinha

Family:  Crenuchidae (South American darters), subfamily: Characidiinae
Max. size:  8.81 cm (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  South America: coastal streams between Guanabara Bay and Mangaratiba, Rio de Janeiro, Brazil.
Diagnosis:   
Biology: 
IUCN Red List Status: Critically Endangered (CR); Date assessed: 07 November 2018 (B2ab(iii,iv)) Ref. (130435)
Threat to humans:  harmless
Country info:  Occurs in coastal streams between Guanabara Bay and Mangaratiba, Rio de Janeiro (Ref. 37059). Type locality, Grajaú, Rio de Janeiro (Ref. 30296).


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