Puntigrus tetrazona var.

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Puntigrus tetrazona var., also known as GloFish Tiger Barb, is a fluorescent variety of the tiger barb, a popular schooling cyprinid. Its compact body, dark bands, and energetic behavior remain those of the base species, while its bright coloration comes from a line developed for aquarium keeping. This variety is commonly offered in several vivid color forms, and it is very common in the aquarium trade. It is best suited to a well-filtered aquarium with open swimming space and should be kept in a group. As with other barbs, a sufficiently large group helps distribute chasing and reduces harassment toward tank mates. Proper planning remains important despite its hardy reputation.

General species description

The tiger barb is an active, social, and relatively hardy freshwater fish when its basic needs are met. Puntigrus tetrazona var. retains the body shape of the tiger barb: a deep, laterally compressed body, rapid swimming, and a strong presence in the middle levels of the aquarium. The GloFish form is mainly distinguished by its highly visible fluorescent coloration under suitable lighting; it is not a separate species. A group of at least six individuals is generally preferable because it spreads social interactions throughout the shoal. However, the species may nip slow-moving fish or long fins when kept in too small a group or in an undersized aquarium. Plants, wood, and open swimming areas encourage more natural behavior. This variety remains very common and easy to find, but its community must still be planned carefully.

Geographic origin and biotope

Country of reference: Indonesia. The wild form of Puntigrus tetrazona is associated with insular Southeast Asia, particularly Sumatra, with historical references to other parts of the Malay region. It occurs in forest streams, small waterways, and calm or moderately flowing areas, often stained by leaves and organic matter. The water may be soft to moderately mineralized, with a slightly acidic to neutral reaction. Natural habitats commonly include subdued light, roots, submerged branches, and dense plant material. In an aquarium, efficient filtration, regular maintenance, and moderate circulation recreate this setting better than strong current. Practical aquarium parameters are approximately 22 to 28 °C and a pH around 6.0 to 8.0. The GloFish variety is intended for aquarium keeping; fish sold under this name are not presented as a wild population.

Precise locality and local name

Within its natural range, the species is mainly associated with Sumatra, Indonesia, where it inhabits small tributaries, forest drainage channels, and lowland freshwater basins. Aquarium and trade references often use the vernacular or commercial name ikan Sumatra, along with translated names such as tiger barb. The name GloFish Tiger Barb identifies the fluorescent aquarium variety rather than a new geographic population. Its native habitat is generally structured by marginal plants, leaf litter, and shaded areas. In an aquarium, a dark substrate and green plants can make the fluorescent colors stand out without requiring an overcrowded layout. Its geographic origin should be understood as that of the base species, while the colored variety belongs to the aquarium-breeding trade. This distinction helps prevent confusion with a fish collected from the wild.

Appearance and physical characteristics

The body of Puntigrus tetrazona var. is short, deep, and laterally compressed, with a golden to orange background crossed by the characteristic vertical bands of the tiger barb. The fins may show red or orange tones, especially in males displaying breeding condition. In the GloFish variety, fluorescence is added to this base pattern and may appear red, orange, green, or pink depending on the commercial line. Visual intensity depends on the substrate, lighting, and the fish’s overall condition. Adult males are often slimmer and display stronger red coloration, while females tend to be fuller-bodied, particularly around the abdomen. Adult size usually reaches approximately 6 to 7 cm. The four dark bands and stocky body remain the main identifying features, even when fluorescent coloration is prominent.

General diet

The tiger barb is an omnivore and readily accepts a varied aquarium diet. A staple diet may consist of quality flakes or small pellets, offered in portions that are quickly consumed. To support color and condition, alternate these foods with small frozen or live foods such as brine shrimp, daphnia, or mosquito larvae from a safe source. Some vegetable content, supplied through enriched foods or prepared diets containing plant ingredients, is also useful. Feeding twice daily in small portions is preferable to offering a large amount at once. Young or growing fish may benefit from more frequent meals. A varied diet encourages stronger coloration, steady growth, and more active behavior. Removing uneaten food helps protect water quality, which is essential for this energetic species. Avoid relying exclusively on color-enhancing foods; stable water and balanced nutrition matter more.

Essential data

• Original river name: small waterways and tributaries of Sumatra are associated with its natural range.
• Local name used: ikan Sumatra.
• Origin of the scientific name: Puntigrus is the current genus; tetrazona refers to the four dark bands.
• Etymology of the full name: Puntigrus is formed from the former usage of Puntius and a reference to the tiger; tetrazona comes from Greek tetra, four, and zona, zone or band.
• Common/vernacular names: tiger barb, Sumatra barb, GloFish Tiger Barb.
• Family: Cyprinidae.
• Subfamily: Barbinae.
• Name pronunciation: poon-tee-gruss tet-rah-ZOH-nah.
• Discovery: Pieter Bleeker, 1855.
• Maximum adult size: approximately 7 cm.
• Water temperature and pH: 22 to 28 °C; pH 6.0 to 8.0.
• Waterway appearance and surrounding vegetation: shaded small streams, leaf litter, roots, and marginal vegetation.
• Typical tank mates: Puntigrus pentazona, Brachydanio rerio, Devario aequipinnatus, Botia kubotai, Pangio semicincta.
• Temperament and behavior: active, schooling, and sometimes fin-nipping when kept in an undersized group.
• Water depth: generally shallow water.
• Sexual dimorphism: males are often slimmer and more colorful; females are fuller and heavier-bodied.
• Bottom structure and flow: sandy or muddy bottoms with leaf litter, and low to moderate current.

In your aquarium

Success with Puntigrus tetrazona var. depends mainly on a stable, well-filtered aquarium that is long enough for group swimming. Keep several individuals, provide plants and hiding places, and leave an open central swimming area. Clean water, regular water changes, and varied foods support coloration and reduce excessive chasing. Avoid very slow fish or heavily veiled tank mates. With these precautions, this fluorescent variety remains a lively and striking choice for a suitable community aquarium while retaining the basic needs of the tiger barb.