Coral Red Pencilfish (Nannostomus mortenthaleri)

One of the most strikingly beautiful species of pencilfish, the Coral Red Pencil originates from the soft, acidic waters of the upper Rio Nanay in the Peruvian Amazon. A schooling fish, they are best kept in groups of 5 or more as they will display the best color in the presence of a group. In the aquarium, they make stunning display fish, and are both hardy and active. Feeding a diet high in red color enhancers (like astaxanthin or other carotenoids) will help ensure they maintain their brightest colors.