Nannostomus ‘RedBull’ is a type of pencilfish which lately discovered will aquarist once after amaya & cenepa. this species first landed at japan & started to had around the world slowly. with ‘red bull’, its actually has not much difference compare to marginatus & trifaciatus. the only difference between red bull & marginatus is red bull has a thin red line before the gold stripe while marginatus does not have it. while difference between red bull & trifaciatus is trifaciatus is with red dot inside the gold stripe.