Bryconops tocantinensis
Bryconops tocantinensis is a small freshwater fish from the rivers of Brazil. It has yellow-gold scales on its back and white scales on its belly, with a bright-silver stripe marking the divide between the two. It gets the name "tocantinensis" from its endemism to the upper Tocantins basin drainage - specifically, the Conceição River. Description Bryconops tocantinensis reaches about 6.5 cm (2.6 in) in standard length (excluding the tail fin), which makes it one of the smaller members of the genus. The dorsal, adipose, and caudal fins are all entirely orange, which is a similarity it shares only with congeners B. humeralis and B. vibex. However, it can easily be distinguished from the two because it lacks humeral spots (whereas the others have one on each side) and because it lacks teeth on the maxilla (vs. 1-3 on each side). The scales on the upper half of the body are a yellow-gold color, with a bright silver lateral stripe marking the divide; the lower half is white-to-silver. The upper portion of the face and head is slightly darker, as are the distal portions of both lobes of the caudal fin. It has 38 to 48 pored lateral line scales; these