Dash-dot tetra - Hemigrammus bellottii

Scientific name: Hemigrammus bellottii

Common name: Dash-dot tetra

Family: Characidae

Usual size in fish tanks: 3 - 4 cm (1.18 - 1.57 inch)

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Recommended pH range for the species: 6.2 - 7.1

Recommended water hardness (dGH): 5 - 17°N (89.29 - 303.57ppm)

0°C 32°F30°C 86°F

Recommended temperature: 24 - 26 °C (75.2 - 78.8°F)

The way how these fish reproduce: Spawning

Where the species comes from: South America

Temperament to its own species: peaceful

Temperament toward other fish species: peaceful

Usual place in the tank: Middle levels

Tank Requirements

Dash-dot Tetras (Hemigrammus bellottii) are best suited for well-planted aquariums that mimic their natural habitat. A tank size of at least 40 liters (10 gallons) is recommended for a small group of these fish. As a schooling species, they should be kept in groups of at least 6 to 8 individuals, which helps reduce stress and allows them to display their natural behaviors.

The aquarium should include soft, slightly acidic water with a pH range of 6.2-7.1, and water hardness between 5-17°N (89.29-303.57 ppm). The ideal temperature range for this species is 24-26°C (75.2-78.8°F). Use a gentle filtration system to maintain water quality without creating too strong a current, as they prefer calmer waters.

Incorporate plenty of plants such as Amazon Swords and Java Moss to provide cover and create a natural environment. Floating plants can also be used to diffuse lighting, which mimics the subdued conditions they experience in their natural habitats. A dark substrate will further enhance their colors, making them stand out beautifully in the aquarium.

Tankmates

Dash-dot Tetras are peaceful and make an excellent addition to a community aquarium. They get along well with other non-aggressive species that prefer similar water conditions. Suitable tankmates include:

They are best housed with other small, peaceful fish to maintain a tranquil environment in the aquarium.

Food and Feeding

Dash-dot Tetras are omnivores and will readily accept a variety of foods. A quality flake or micro-pellet can serve as their staple diet. To keep them in optimal condition, supplement their diet with live or frozen foods such as brine shrimp, bloodworms, and white worms. Feeding them small, frequent meals two to three times a day is recommended, ensuring they get enough nutrition without overloading the tank with uneaten food.

It's important to offer a varied diet to bring out their best coloration and keep them healthy. Including vegetable matter like finely chopped spinach or spirulina flakes occasionally can also benefit their overall health.

Sexing

Distinguishing between males and females can be subtle. Males are usually more slender than females and exhibit slightly more vibrant colors. Females, especially when in spawning condition, will have a fuller, rounder body due to the eggs they carry.

Breeding

Breeding Dash-dot Tetras can be achieved in a separate, well-planted breeding tank. Use a dimly lit environment with plenty of fine-leaved plants, such as Java Moss or spawning mops, to provide suitable egg-laying sites. Soft, acidic water conditions with a pH of around 6.0-6.5 and a temperature of 26°C (78.8°F) are ideal for encouraging spawning.

The parents typically spawn at dawn, scattering their eggs around the tank. It's crucial to remove the adults after spawning, as they may eat the eggs. The eggs will hatch within 24 hours, and the fry will be free-swimming after an additional 3-4 days. Initially, feed the fry infusoria or specially formulated fry foods. As they grow, transition them to newly hatched brine shrimp and crushed flake foods.

Lifespan

The expected lifespan of Dash-dot Tetras in captivity is 2-4 years with proper care and a stable tank environment.

Origin

Dash-dot Tetras are native to South America, particularly found in the Negro and Maroni River Basins. These rivers provide the soft, slightly acidic waters that this species prefers in its natural habitat.

Short Description

Hemigrammus bellottii, commonly known as the Dash-dot Tetra, is a peaceful, small schooling fish ideal for community aquariums. Their lively nature and iridescent colors make them a favorite among aquarists. They thrive best in a well-planted tank with soft, slightly acidic water conditions. Keeping them in groups of 6 or more allows them to exhibit their natural schooling behavior and feel secure in the aquarium environment.