Description

Leporinus steyermarki
Scientific Name: Leporinus steyermarki
Common Names: Steyermark’s Leporinus, Steyermark’s Toothpick Fish
Overview

Leporinus steyermarki is a vibrant and active species of fish from the Leporinus genus, native to the tropical rivers of South America, particularly in Venezuela and the surrounding areas. Recognized by its slender body, long fins, and distinctive black markings, it is often called the “Toothpick Fish” due to its thin, elongated appearance. Known for its curious nature, it makes an interesting and peaceful addition to larger community aquariums, but its active swimming behavior and potential for territoriality during breeding means it should be housed with compatible tankmates.
Key Information

Size: Up to 7–8 inches (18–20 cm)

Lifespan: 5–7 years

Temperament: Peaceful, but may become territorial when breeding

Diet: Omnivore – scavenger, but also accepts plant matter

Swimming Level: Mid to upper
Habitat & Tank Setup

Tank Size: Minimum 55 gallons for a group of 3–5 individuals

Group Size: Prefers to be in groups, as they are social fish

Substrate: Fine sand or gravel

Decor: Rocks, driftwood, and plenty of open swimming space

Plants: Hardy plants like Anubias or Java fern; they may nibble on soft plants

Lighting: Moderate to bright

Filtration: Moderate to strong filtration to keep water clean and oxygenated
Water Parameters

Temperature: 74–82°F (23–28°C)

pH: 6.0–7.5

Hardness: Soft to moderately hard (4–12 dGH)

Water Quality: Clean, well-filtered water with regular water changes
Feeding

Diet Type: Omnivore

Suitable Foods:

High-quality flakes or pellets

Frozen or live foods (bloodworms, brine shrimp, daphnia)

Vegetables like spinach, zucchini, or peas

Feeding Frequency: 1–2 times per day, in moderate amounts
Tankmates

Compatible With:

Larger peaceful community fish (tetras, peaceful cichlids, rainbowfish)

Larger catfish (Corydoras, Pictus)

Other species of Leporinus (best in a group of 3 or more)

Avoid:

Slow-moving, delicate fish or small shrimp (may be stressed or outcompeted)

Aggressive or overly territorial species
Care Notes

Very active swimmers, so provide ample swimming space

Can be territorial during breeding, so provide hiding spots

They have a tendency to nibble on soft plants but are not destructive

Regular water changes and good filtration are essential for this species

They appreciate a well-planted tank with lots of cover for occasional hiding
Fun Fact

The Leporinus steyermarki gets its common name “Toothpick Fish” due to its slender body and long fins, making it resemble the shape of a toothpick. They are also known to jump when startled, so a lid is recommended for the aquarium!