Goldstripe headstander - Anostomus ternetzi

Scientific name: Anostomus ternetzi

Common name: Goldstripe headstander

Family: Anostomidae

Usual size in fish tanks: 12 - 16 cm (4.72 - 6.3 inch)

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Recommended pH range for the species: 6.4 - 7.2

Recommended water hardness (dGH): 5 - 16°N (89.29 - 285.71ppm)

0°C 32°F30°C 86°F

Recommended temperature: 23 - 29 °C (73.4 - 84.2°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: aggressive to smaller

Usual place in the tank: Top levels

Origin

The Goldstripe Headstander (Anostomus ternetzi) originates from South America, where it inhabits the waterways of the Amazon and Orinoco river basins. These fish are commonly found in slow-moving rivers and streams with dense vegetation and submerged roots, which provide both shelter and abundant food sources. Understanding their natural habitat is essential for aquarists aiming to replicate similar conditions in the aquarium. Providing a well-planted tank with plenty of hiding places will help these fish feel secure and exhibit their natural behaviors.

Tank Setup and Environment

To create a suitable environment for Goldstripe Headstanders, a tank of at least 150 liters (40 gallons) is recommended to accommodate their active swimming habits and potential size of up to 16 cm (6.3 inches). A densely planted tank with driftwood, rocks, and other hiding spots will help replicate their natural habitat and reduce territorial disputes. These fish are known for their upright swimming posture and can often be seen swimming at an angle, which is a characteristic behavior in the wild.

Maintain water conditions with a slightly acidic to neutral pH range of 6.4-7.2 and a water temperature between 23-29°C (73.4-84.2°F). A sandy or fine gravel substrate is ideal, along with subdued lighting, as these fish prefer dimly lit environments. Use a gentle filtration system to ensure water quality, and perform regular water changes to keep nitrate levels low. As these fish are known jumpers, a tightly fitting lid is essential to prevent them from escaping the tank, especially if they feel threatened or disturbed.

Food and Feeding

Goldstripe Headstanders are omnivores with a strong preference for plant matter in their diet. In the aquarium, they will accept a variety of foods, but it is crucial to include algae in their diet to keep them in top condition. Offer high-quality flake food or small pellets as the staple diet and supplement with algae wafers to meet their herbivorous needs. These fish will also appreciate fresh vegetables such as blanched spinach or zucchini, which can be attached to the tank glass for grazing.

To enhance their diet, provide live or frozen foods such as brine shrimp and bloodworms as occasional treats. This varied diet not only ensures balanced nutrition but also helps bring out the vibrant coloration of the fish. Feed them once or twice daily, offering only what they can consume within a few minutes to prevent overfeeding and maintain water quality. Observing their feeding behavior can also help monitor their health and well-being.

Sexing

Sexing Goldstripe Headstanders can be challenging, especially when they are young. However, as they mature, females typically develop a rounder, fuller body shape compared to males, particularly when they are carrying eggs. Males tend to remain more slender. During the breeding season, these differences become more apparent, making it easier to distinguish between the sexes in a group setting.

Breeding

Breeding Anostomus ternetzi in captivity is a challenge, as there are currently no documented cases of successful breeding in home aquariums. In the wild, they are known to be egg scatterers, releasing eggs over vegetation and substrate. To simulate their natural breeding conditions, provide a well-maintained tank with plenty of plant cover and ensure stable water parameters. However, due to the lack of detailed information on their breeding habits in captivity, breeding this species may require further research and experimentation by experienced aquarists.

Lifespan

The Goldstripe Headstander has a lifespan of 5-8 years in captivity. To ensure they reach their full potential lifespan, provide them with a well-balanced diet, stable water conditions, and a suitable tank environment. Their relatively long lifespan for a mid-sized aquarium fish makes them a rewarding choice for aquarists seeking an interesting and unique species for their community tank.

Compatibility and Tank Mates

Goldstripe Headstanders can be somewhat territorial, especially when kept alone or in small numbers. To reduce aggression, it is best to keep them in groups of at least 6 individuals, which helps disperse territorial behaviors. When selecting tank mates, choose peaceful species that inhabit different levels of the aquarium to minimize competition. Ideal companions include peaceful cichlids and short-finned characins. Avoid adding overly aggressive or fin-nipping species, as this can stress the Goldstripe Headstanders and lead to conflicts.

Short Description

The Goldstripe Headstander (Anostomus ternetzi) is a unique and active fish known for its distinctive head-standing swimming posture. Native to South America, these fish add a dynamic element to the aquarium with their interesting behavior and striking appearance. While generally peaceful, they can exhibit territorial behavior, especially if kept alone or in small groups. By providing a well-planted tank with ample hiding spots and a varied diet rich in plant matter, aquarists can enjoy the beauty and intrigue of this species for many years. Due to their jumping tendency when disturbed, a secure tank lid is essential for keeping these fish safe and contained.