Hyphessobrycon borealis

Hyphessobrycon borealis is commonly found in French Guiana, where it has been discovered in many coastal river systems,^[3] and in Amapá in Brazil.^[1]

Hyphessobrycon borealis has a tail very similar to the Buenos Aires tetra, with its black patch jutting out into yellow and then turning clear. A long black line runs down its body with an iridescent black below it and an iridescent gray above it.^{[citation needed]}