Allan James
his species from the Aeneus Group is found in the middle stretches of the Rio Negro in Brazil and is a look-alike. It has the same colouration as C. metae from the river of the same name in Colombia but davidsandsi has a longer snout and the black stripe carries on into the bottom lobe of the caudal fin while C. metae stops short at the caudal peduncle. The C. melini connection has melini having the same black body stripe ending on the bottom lobe of the caudal fin, but the stripe separates just behind the dorsal fin and continues as two lines over the back of the body. The colouration is also different with melini being a dirty white with black specks to the edges of the body scutes, while davidsandsi has a tan colouration with no specks. If you can make all that out I will explain how 1 spawned this species (C.davidsandsi that is ).

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