Distichodontidae

Long-nosed Distichodus

Distichodus sexfasciatus

The Long-nosed Distichodus, scientifically known as Distichodus sexfasciatus, is a member of the family Distichodontidae. This rather large fish, characterized by its distinctive striped coloration, outwardly resembles a perch, yet it is not commonly encountered. It cannot be easily found in ordinary stores, making it an object of interest primarily for collectors and experienced aquarists willing to acquire an expensive species.

Tank
from 540 L (143 gal), 600 L (159 gal) recommended
Temperature
22 – 26 °C (72 – 79 °F)
Size in aquarium
38 – 76 cm (15 – 30 in)
Acidity
pH 6.5–7
Natural rangeRange on the map
  • Congo River Basin
  • Lake Tanganyika
  • Angola
  • Cameroon
  • Democratic Republic of the Congo
  • Republic of the Congo
  • Tanzania

Tank conditions

Plan the tank stocking
Temperature
22 – 26 °C (72 – 79 °F)
Water pH
Neutral (6.5) – Neutral (7)
Water dH
Very soft (2) – Very hard (20)
Water salinity
no salt (freshwater)
Size in aquarium
38 – 76 cm (15 – 30 in)
Lifespan
12 years
Temperament
Territorial often aggressive
Toward small fish
not a predator
Required aquarium volume
from 540 L (143 gal), 600 L (159 gal) recommended
Lighting
moderate (regular)
Substrate
soft sandy including silted
Water flow
moderate
Swimming level
near the bottom
Feeding
Mixed diet meat + plant-based
Keeping
Solitary
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 (solitary), footprint, decor and tank mates.

Care and keeping

Description

Among the distinctive features of the Long-nosed Distichodus are its elongated head and characteristic forked caudal fin. The body coloration varies from orange to golden, with prominent vertical black stripes noticeable across the entire body. Interestingly, this striking pattern becomes less distinct with age.

Habitat

This representative of African characins inhabits large rivers and their tributaries in the Congo basin as well as Lake Tanganyika, preferring to stay in schools. Their diet primarily consists of soft vegetation, such as young shoots and leaves, but they will also readily consume worms and other benthic invertebrates when available.

Behavior and Compatibility

Young individuals of this species are peaceful, but over time, their behavior can become quite unpredictable. They tend to show aggression towards smaller fish species and those with long fins. Juveniles school peacefully, but they grow increasingly intolerant of one another with age, so adults are kept singly: an enormous tank would be needed to house a group of adults. Even similarly sized tank mates are not always safe alongside this species. They coexist well with catfish and other species that prefer to stay at the bottom.

Care and Maintenance

Since any large fish produces a significant amount of waste, the Long-nosed Distichodus is no exception, and maintaining water cleanliness becomes a key condition for its successful keeping. Installing an efficient filter, preferably an external canister type, and regular 30% water changes every two weeks, are usually sufficient for this task. Other necessary equipment includes an aerator, a lighting system, and a heater. The aquarium must be covered, as these fish are known for their jumping. For aquarium decoration, it is recommended to use artificial plants, arranging them in groups near shelters such as driftwood, grottoes, or imitations of castles or sunken ships. Smooth stones and coarse sand are suitable as substrate.

Diet

Although the Long-nosed Distichodus can be classified as an omnivorous species, it should be remembered that it prefers plant-based food. The lion's share of its diet should consist of plant products, such as flakes and pellets with vegetable components, fresh or frozen lettuce or spinach leaves, and peas. Meat supplements, such as bloodworms, can make up a smaller portion of the diet. It is important to provide sufficient main food, otherwise there is a risk that the fish will start nibbling on live aquarium plants.

Breeding and Reproduction

Cases of successful breeding of the Long-nosed Distichodus in home aquarium conditions have not yet been recorded.

Diseases

The long-nosed distichodus shows high endurance, and provided a balanced aquarium, health problems are generally absent.

How to choose

When choosing a long-nosed distichodus, preference should be given to young specimens, as they adapt more easily to aquarium conditions. Carefully inspect the fish for intact fins, absence of spots, ulcers, or plaque on the scales, which may indicate bacterial infections. A healthy specimen should show high activity and have a good appetite. — Avoid purchasing fish with signs of emaciation or an unnaturally bloated belly. — Make sure the fish shows curiosity and does not constantly hide in the corners of the aquarium. — Ask the seller about the current diet to ensure a smooth transition to the foods you typically use.

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 Long-nosed Distichodus get?

An adult reaches 38–76 cm in length. Plan the tank around the maximum size: the fish quickly outgrows a cramped setup.

What size aquarium does Long-nosed Distichodus need?

The recommended volume is 600 L. A smaller tank speeds up nitrate build-up and raises stress levels.

What water parameters does Long-nosed Distichodus need?

Temperature 22–26 °C, pH 6.5–7, 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 Long-nosed Distichodus live?

Around 12 years when kept properly. Lifespan depends directly on tank volume, water quality and a varied diet.

Is Long-nosed Distichodus aggressive?

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

How many Long-nosed Distichodus should be kept together?

Recommended setup: solitary. Ignoring this is a common cause of stress and disease.

What does Long-nosed Distichodus eat?

Diet type: mixed diet (meat + plant-based). Feed small portions that are finished within a couple of minutes — overfeeding does more harm than underfeeding.

What is the scientific name of Long-nosed Distichodus?

The scientific name of the species is Distichodus sexfasciatus, family Distichodontidae. It also appears in the literature as: Distichodus tanganicae.

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Other scientific names and conservation status

Other scientific names
Distichodus tanganicae
Categories
Characins
Conservation status
Least concernLC