Description
Red Shining Pencilfish (Nannostomus nitidus) are a dazzling, lesser-known species of pencilfish native to the blackwater tributaries of the Amazon Basin. Their slender body is highlighted by a brilliant red sheen with a subtle horizontal stripe that becomes even more vibrant under soft lighting. Unlike their more common relatives, these nano schooling fish display a glowing, ruby-toned body that makes them stand out in heavily planted or aquascaped aquariums.
Known as one of the most beautiful and elegant nano fish available in the aquarium hobby, the Red Shining Pencilfish is a top choice for aquarists seeking both uniqueness and peaceful community compatibility. They are perfect for aquascapers looking to add a splash of refined color to nano and mid-sized tanks.
At our Splashy Fish tropical fish store, our Red Shining Pencilfish for sale and other freshwater fish for sale are carefully selected and packed with love! Visit us to buy them online or at our aquarium store in Virginia for more betta fish for sale, freshwater shrimp for sale, live aquatic plants for sale, and aquarium supplies.
WHAT YOU CAN EXPECT FROM THIS FISH:
Coldwater Compatibility: These freshwater fish do well in room-temperature tanks (60–72°F), making them suitable for unheated setups or cooler climates.
Hardy and Beginner-Friendly: Red Shining Pencilfish are surprisingly easy to care for and adaptable, which makes them an excellent choice for beginner aquarists.
Striking Schooling Behavior: When kept in groups of 6 or more, these fish exhibit captivating synchronized movements and social interaction.
Peaceful Community Member: They do exceptionally well with other small, calm tank mates including freshwater shrimp and nerite snails.
Perfect for Nano Tanks: With a max size of around 1.5 inches, they’re an ideal species for aquascaped nano aquariums or designer setups.
RECOMMENDED TANK PARAMETERS:
Tank Size: Minimum 10 gallons
Temperature: 60–72°F (15–22°C)
pH Range: 6.0 – 8.0
Water Hardness: 5 – 19 dGH
Filtration: Sponge filter or low-flow hang on back filter (HOB)
Lighting: Soft to moderate; enhances red tones
CARE GUIDELINES:
Diet: Red Shining Pencilfish are omnivorous and thrive on a protein-rich diet. Offer high-quality flakes, micro pellets, and a mix of live or frozen foods like brine shrimp, bloodworms, and daphnia to bring out their natural red shimmer.
Feeding Habits: These fish have small mouths, so fine-sized foods are best. Feed them 1–2 times daily in small portions to maintain health and vibrant coloration.
Social Behavior: Red Shining Pencilfish are peaceful, social, and naturally schooling. They are happiest when kept in a group, which reduces stress and promotes confident swimming.
Average Adult Size: 1.2 – 1.5 inches (3 – 4 cm)
