No look st their vents. We watched a video while he was selecting and it said the best way to select is by the vent on Bolivians. Female is thicker and more Clint , male is pointy. If you look careful looks like one of each lip
April is correct on the sexing by the vents on these fish (that is exactly how I sexed them). The female has a thick, blunt ovipositor (as the eggs pass through it). The male's is more pointed (as it is used to fertilize the eggs once deposited).