Anostomidae

Banded Leporinus

Leporinus fasciatus

The Banded Leporinus, scientifically known as Leporinus fasciatus, belongs to the Anostomidae family. For many years, this fish has attracted the attention of aquarists due to its characteristic alternating black and yellow stripes, making it one of the most sought-after species for home keeping among tropical fish.

Tank
from 700 L (185 gal)
Temperature
22 – 28 °C (72 – 82 °F)
Size in aquarium
20 – 37 cm (7.9 – 15 in)
Acidity
pH 5.5–7.5
Natural rangeRange on the map
  • South America area
  • Amazon River Basin
  • Orinoco River Basin
  • Brazil
  • French Guiana
  • Peru
  • Suriname
  • Uruguay

Tank conditions

Plan the tank stocking
Temperature
22 – 28 °C (72 – 82 °F)
Water pH
Slightly acidic (5.5) – Neutral (7.5)
Water dH
Very soft (2) – Very hard (20)
Water salinity
no salt (freshwater)
Size in aquarium
20 – 37 cm (7.9 – 15 in)
Lifespan
10 years
Temperament
Territorial often aggressive
Toward small fish
not a predator
Required aquarium volume
from 700 L (185 gal)
Lighting
moderate (regular)
Substrate
sandy (regular, light)
Water flow
strong
Swimming level
near the bottom
Feeding
Plant-based algae, vegetables
Keeping
Both solitary and in group flexible
Jumping
high a tight-fitting lid is essential
  • Lifespan. A lifespan to expect under good care, not a measured value: it depends heavily on tank volume, water quality and diet — and for selectively bred forms, on their origin as well.
  • Toward small fish. Based on the Predators category in the catalog or the temperament in the species parameters. “A risk to small fish” means the species is not a predator by habit, yet will swallow any fish that fits in its mouth.
  • Required aquarium volume. This is a husbandry recommendation, not a measured value: the volume depends on the keeping mode (both solitary and in group (flexible)), footprint, decor and tank mates.

Care and keeping

Description

The body of the Banded Leporinus is elongated, tapering smoothly towards the tail, and its head has a pointed shape. A distinctive feature of its appearance is the contrasting yellow and black stripes, the number of which increases as the fish matures.

Habitat

At the end of the 18th century this fish was described from Suriname; its range covers the Amazon and Orinoco basins in South America. Leporinus inhabit areas with fast currents. During the rainy season, they move to flooded forest areas. When water levels drop, these fish often become trapped in the resulting ponds and backwaters. Their diet consists of algae, plant debris, worms, various insects, and sometimes small fish.

Behavior and Compatibility

The Banded Leporinus exhibits a peaceful nature if kept in a group of at least 6 individuals, regardless of species; with fewer numbers, they may show signs of aggression. This species coexists well with fish of similar size and temperament but poses a danger to smaller aquarium inhabitants. One of the negative behavioral traits of Leporinus is their "love" for long fins, which they often nip off their tank mates.

Care and Maintenance

A key condition for the well-being of these fish is maintaining high water quality, for which it is recommended to purchase powerful canister filters and additional air stones to ensure effective aeration. Every two weeks, 25% to 50% of the water volume should be replaced with fresh water. It is also important to create sufficient water movement in the aquarium, simulating a river current. Canister filters are usually capable of providing this effect; otherwise, special powerheads can be used. In aquarium decor, preference is given to wooden elements (snags, roots), which not only decorate but also serve as a substrate for the growth of single-celled algae, providing an additional food source. Sand is the preferred substrate, supplemented with several large smooth stones. Fragile decorations should be avoided, as the fish are very active and can easily damage delicate structures. Careful consideration is also needed when choosing plants, as the fish can significantly damage soft leaves and stems.

Diet

Since these fish prefer plant-based food, they can be fed specialized commercial foods based on plant components (e.g., vegetable flakes, dried algae, pellets), as well as homemade preparations — finely chopped spinach leaves, lettuce, or young shoots of tender plants. It is important to remember that without sufficient plant food, aquarium plants may suffer.

Breeding and Reproduction

Attempts at successful breeding in home conditions have not yet been successful, as it is difficult to recreate the necessary conditions of the rainy season and the opportunities for migration characteristic of their natural habitat. In nature, Leporinus are caring parents: the male builds a kind of nest where the female lays her eggs, and he then guards them until the offspring appear.

Diseases

Fish of this family have a predisposition to skin parasitic diseases due to their physiological characteristics. However, such cases are rare under favorable conditions. A change in water quality will almost certainly lead to such problems.

How to choose

When choosing a Banded Leporinus, young individuals should be preferred, as they adapt more easily to aquarium conditions. Carefully inspect the fish: the body should be clean, without damage, white film, ulcers, or signs of fungus. Healthy individuals are active, have a clear, contrasting pattern, and tightly clamped fins. Avoid specimens with sluggish behavior, sunken bellies, or signs of emaciation. Given the territorial nature of the species, it is better to acquire a group of 5 or more individuals at once to reduce the risk of intraspecific aggression. Before purchasing, ensure that the fish in the store are kept in conditions close to those required and show no signs of stress from recent transportation.

Compatibility

There are no pair reviews for this species yet — check tankmates in the matcher.

All tankmates

Plants and this fish

Matching water does not mean the plant will stay intact.

Frequently asked questions

The essentials: size, tank volume, water parameters and care

How big does Banded Leporinus get?

An adult reaches 20–37 cm in length. Plan the tank around the maximum size: the fish quickly outgrows a cramped setup.

What size aquarium does Banded Leporinus need?

The recommended volume is 700 L. A smaller tank speeds up nitrate build-up and raises stress levels.

What water parameters does Banded Leporinus need?

Temperature 22–28 °C, pH 5.5–7.5, hardness 2–20 dGH. Stability matters more than exact values: sudden swings are harder on the fish than a small deviation from the ideal.

How long does Banded Leporinus live?

Around 10 years when kept properly. Lifespan depends directly on tank volume, water quality and a varied diet.

Is Banded Leporinus aggressive?

Temperament: territorial (often aggressive). Keep this in mind when choosing tank mates.

How many Banded Leporinus should be kept together?

Recommended setup: both solitary and in group (flexible). Ignoring this is a common cause of stress and disease.

What does Banded Leporinus eat?

Diet type: plant-based (algae, vegetables). Feed small portions that are finished within a couple of minutes — overfeeding does more harm than underfeeding.

What is the scientific name of Banded Leporinus?

The scientific name of the species is Leporinus fasciatus, family Anostomidae. It also appears in the literature as: Chalceus fasciatus, Leporinus faciatus, Leporinus novem.

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Other scientific names and conservation status

Other scientific names
Chalceus fasciatus, Leporinus faciatus, Leporinus novem, Leporinus novemfasciatus, Salmo fasciatus, Salmo timbure
Categories
Characins
Conservation status
Least concernLC