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Assorted Pencilfish EXPERT ONLY
Please Note: Due to variations within species, your item may not look identical to the image provided. Approximate size range may also vary between individual specimen.
Assorted Pencilfish EXPERT ONLY (Nannostomus sp.)
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Quick Stats

Care Level Expert Only
Temperament Peaceful
Color Form Black, Red, White, Yellow
Diet Omnivore
Water Conditions 72-83° F, KH 2-5, pH 5.5-7.0
Max. Size 2"
Origin Brazil
Family Lebiasinidae
Minimum Tank Size 10 gallons
What do these Quick Stats mean? Click here for more information


The Pencilfish originates within the tributaries of South America. They are bullet shaped and are mostly gold in color. Red and black horizontal lines cover the entire length of the fish and the red line extends into the tail. The upper half of the caudal fin is clear while the rest of the fin is red in coloration. They are a peaceful fish that will make a wonderful addition to any freshwater community aquarium.

The Pencilfish can be housed in an aquarium with other peaceful soft water fish. It is best to keep these fish with fish that are not overly active. Live plants, rocks and driftwood help to enhance its natural habitat and provide hiding spaces. They are sensitive to high nitrate levels, so frequent water changes may be necessary.

It is best when trying to breed the Pencilfish to remove the pair from the community aquarium to a separate breeding aquarium. Quickly remove parents after spawning, as they will frequently consume the eggs. The eggs will hatch within a few days. Feed the newborn newly hatched brine shrimp or rotifers.

The Pencilfish will typically inhabit the upper third of the aquarium where they will search for food. Frozen and freeze dried daphnia, baby brine shrimp and tubifex worms are an ideal food. In time, they will also adapt to accepting crushed flake foods.

Approximate Purchase Size: 3/4" to 1-1/4"

Please note: We guarantee that ALL aquaria species we offer will arrive alive and in good condition. However, because of the increased level of care required for this particular species, it has been designated as "Expert Only." This species is recommended only for the expert aquarist, zoo, or research institution. “Expert Only” aquatic life is exempt from our extended guarantee after their arrival.

Customer Testimonials

Steve Van Detroit , MI
I wanted a small, eye catching schooling fish that likes the upper part of the tank, so I tried this pencilfish. They arrived a bit different colored than the description (silver/white with black line), but they quickly turned into colorful fish that exceed expectations and are much better than the photograph here. Mine sometimes school tightly and sometimes wander around doing their own things individually. Super cool fish! Very colorful, peaceful and I now wish that I would have purchased more than 6.
1-1 of 1 testimonials

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