Macaronesia, Fish, Madeira, New species, Teeth, taxonomy, Physical characteristics, Congeners, freshwater fish, Myleus, Ostariophysi, pacu, rapids, Spines, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronésia, Macaronesian, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macaronésia, Macaronesian, Macaronésie, Macar...