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Introduction

Distichodus teugelsi is a small African characiform from the family Distichodontidae, native to the Congo Basin. This species remains uncommon in the aquarium trade and is mainly of interest to keepers specializing in African freshwater fishes. Its slender body, active swimming style and specialized dentition reflect the biology of distichodontids. Because the fish is offered as wild-collected, careful acclimation and a varied diet are especially important. It is best suited to a spacious, well-oxygenated aquarium with open swimming areas and stable water conditions.

General species description

Distichodus teugelsi is a freshwater fish from central Africa and belongs to the Distichodontidae. It is a relatively uncommon species in aquarium collections, but its body shape and active swimming behaviour make it attractive to specialized fishkeepers. The aquarium should provide adequate swimming length, efficient filtration and stable water quality. Its presumed omnivorous diet calls for a combination of plant-based foods and small animal foods. Wild-collected specimens may be more sensitive to transport and sudden changes in water conditions. In the trade, the species is considered moderately uncommon, rather than either very common or exceptionally rare.

Geographical origin and habitat

Distichodus teugelsi is associated with the Congo Basin in central Africa, particularly the Democratic Republic of the Congo. Its natural habitat consists of tropical freshwater environments where water conditions, oxygen levels and food availability may change seasonally. In the aquarium, use clean, well-circulated water and maintain a stable temperature. A layout with roots, smooth stones and robust plants can provide shelter while preserving open swimming space. Since the fish is wild-collected, a calm environment and limited handling are advisable during acclimation and routine maintenance.

Precise locality and local name

Available information places Distichodus teugelsi within the Congo River drainage. No widely established local name is retained for this species in this profile. In the aquarium trade, it is generally identified by its scientific name or by a translation such as “Teugels’ distichodus.” This helps avoid confusion with better-known members of the genus, some of which grow considerably larger and may be more vigorous in behaviour. Identification should rely on the fish’s origin and morphological features, rather than on a commercial label alone.

Appearance and physical characteristics

Distichodus teugelsi has the typical form of a distichodontid: an elongated, laterally compressed body, a relatively short head and a forked caudal fin. The mouth and specialized teeth of the group are associated with a varied diet that includes plant matter. Overall coloration is subdued, ranging from silvery to brownish tones that may change with lighting, age and stress. Its modest adult size distinguishes it from several larger African distichodids kept in aquariums. The characteristic dentition, slender body and active midwater swimming are useful features when recognizing the species.

General diet

The diet of Distichodus teugelsi should be varied and include regular plant-based foods. Offer quality pellets, flakes, vegetable wafers and blanched vegetables such as zucchini or spinach. Small frozen or live foods may be used as supplements, but should not make up the entire diet. Variety is particularly useful for supporting the condition of wild-collected fish, which may encounter changing food sources in nature. Feed small portions and watch how quickly the fish consumes them to prevent waste. A diet excessively rich in animal foods may lead to nutritional imbalance and should be avoided.

Essential data

• River of origin: Congo Basin
• Local name used: No widely established local aquarium name
• Origin of the scientific name: Distichodus comes from Greek roots referring to two rows of teeth; teugelsi honours Guy Teugels.
• Etymology of the full name: Distichodus approximately means “teeth arranged in two rows”; teugelsi means “of Teugels.”
• Common or vernacular names: Teugels’ distichodus
• Family: Distichodontidae
• Subfamily: Distichodontinae
• Name pronunciation: dis-tih-KOH-dus TOY-gel-see
• Discovery: Jacques Géry, 1993
• Maximum adult size: About 8 cm
• Water temperature and pH: 24 to 28 °C; pH 6.0 to 7.5
• Stream appearance and surrounding vegetation: Tropical waterways of the Congo Basin, with vegetated areas and organic debris.
• Typical tankmates: Peaceful African fishes of comparable size, selected according to aquarium volume and layout.
• Temperament and behaviour: Active and generally peaceful with suitable tankmates; provide open swimming space.
• Water depth: Not specified.
• Sexual dimorphism: No reliable external feature is included here.
• Bottom configuration and flow: Sand or fine substrate, roots and moderate to strong circulation.
• Wild-collected species: Yes; quarantine and careful acclimation are recommended.
• Commercial rarity: Uncommon; level 2 out of 3.

In your aquarium

To keep Distichodus teugelsi successfully, choose a long, covered aquarium with strong filtration, stable water and good oxygenation. Provide open swimming areas, a few shelters and moderate lighting. Quarantine is prudent for any wild-collected fish. Success depends mainly on gradual acclimation, a varied diet and regular water changes. Avoid aggressive tankmates and fish small enough to be harassed or eaten. Because this species is uncommon in the trade, keeping accurate records of its origin and supporting responsible purchasing practices are also important.