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!