False rummynose tetra - Petitella georgiae

Scientific name: Petitella georgiae

Common name: False rummynose tetra

Family: Characidae

Usual size in fish tanks: 4 - 5 cm (1.57 - 1.97 inch)

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Recommended pH range for the species: 5.5 - 7

Recommended water hardness (dGH): 5 - 12°N (89.29 - 214.29ppm)

0°C 32°F30°C 86°F

Recommended temperature: 22 - 26 °C (71.6 - 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

Food and feeding

False rummynose tetras are omnivores and do well on a high-quality flake or micro pellet staple. Their diet should be regularly supplemented with live or frozen foods such as brine shrimp, daphnia, or tubifex worms to maintain good health and coloration. Feed them in small portions 1–2 times a day, and always remove uneaten food to maintain water quality.

Origin

Petitella georgiae is native to South America and inhabits whitewater tributaries in the Amazon River basin, particularly in Peru. They are typically found in well-oxygenated, slow-flowing waters with soft, acidic conditions and dense aquatic vegetation.

Sexing

Sexing this species can be difficult. Generally, females are slightly plumper, especially when gravid, while males tend to be slimmer and may show slightly more intense coloration during breeding periods.

Breeding

Breeding Petitella georgiae requires soft, acidic water (pH 5.5–6.5) and subdued lighting. Avoid alkaline water, as it can affect fertility. Use a separate breeding tank with fine-leaved plants or spawning mops. Eggs are scattered and not guarded by parents, so the adults should be removed after spawning. The eggs hatch after about 30 hours, and fry become free-swimming within a few days. Feed the fry infusoria or liquid fry food at first, then transition to newly hatched brine shrimp.

Lifespan

False rummynose tetras typically live for 3 to 5 years with proper care, stable water conditions, and a stress-free environment.

Short description

The false rummynose tetra (Petitella georgiae) is a small, peaceful schooling fish known for its striking red facial markings and distinctive black-and-white tail pattern. Though often confused with true rummynose tetras (Hemigrammus rhodostomus), they are a separate species with similar behavior. Due to their sensitivity, they require pristine water quality and are best kept in established, well-maintained aquariums. A group of 6 or more individuals will feel more secure and display more natural schooling behavior. Subdued lighting, floating plants, and soft, acidic water will help mimic their natural habitat.