Arowana Tetra - Gnathocharax steindachneri : Complete Fish Profile & Care Guide
Table of contents
Introduction
The Arowana Tetra (Gnathocharax steindachneri) may not have the most visually striking appearance among Tetra species, but it remains a captivating choice for enthusiasts who appreciate unique and unusual fish. These Tetras exhibit peaceful and energetic behaviour, forming lively schools that prefer to inhabit the upper portion of the water column. To ensure their well-being, keeping Arowana Tetras in a community aquarium alongside non-predatory fish of similar size and temperament is advisable. Ideal tankmates may include Dwarf Cichlids, Plecos, Corydoras Catfish, and Tetras of comparable size.
Creating a suitable environment for Arowana Tetras involves providing ample open swimming space in the middle of the aquarium while incorporating dense vegetation along the tank's edges and background. The optimal colouration of these fish can be observed against a dark substrate, under subdued lighting, and amidst the presence of floating plants. Adding driftwood branches and roots is also appreciated, as it offers these Tetras a sense of security and refuge when they perceive any potential threats. Furthermore, it is crucial to maintain a moderate surface current in the tank, and a securely fitted lid is essential to prevent these agile Tetras from jumping out.
Regarding physical characteristics, Arowana Tetras possess slender and laterally compressed bodies. Their centrally positioned heads are well-defined, featuring a notable upward orientation and equipped with prominent, protruding teeth on both jaws. Their silvery bodies exhibit a greenish-turquoise iridescence, enhanced by a distinct black blotch at the caudal fin's base and subtle red markings on either side. A red crescent marking can also be observed around their eyes. Except for a few small black dots, the fins of these Tetras remain transparent, contributing to their overall appearance.
Arowana Tetra Photos
Sexual Dimorphism
The sexual dimorphism of Arowana Tetras has yet to be definitively determined. Presently, there is insufficient information available to discern visual differences between males and females with certainty. However, it is worth noting that females may exhibit a discernible dark spot in the abdomen during the pre-spawning phase, which may aid in distinguishing them during this specific reproductive period. Further research and observation are necessary to deepen our understanding of the sexual characteristics of Arowana Tetras.
Quick Facts
| Scientific Name | Gnathocharax steindachneri |
|---|---|
| Year Described | 1913 |
| Other Names | None |
| Kingdom | Animalia |
| Classification | Actinopterygii |
| Order | Characiformes |
| Family | Characidae |
| Genus | Gnathocharax |
| Origins | Brazil , Guyana , Venezuela |
| Max Size | 5 cm |
| Temperament | Peaceful |
| Aquarium Level | Middle - Top |
| Difficulty | Beginner - Intermediate |
| Shoaling | Yes |
| Best kept as | Groups 6+ |
| Diet & Feeding | Omnivore |
| Reproduction | Egg-Scatterer |
| Average Lifespan | Up to 5 Years |
Water Parameters
| Water Type | Freshwater |
|---|---|
| pH | 5.5 - 7.5 |
| GH | 5 - 20 |
| ℉ | 73 - 80 |
|---|---|
| ℃ | 22 - 26 |
Natural Habitat
Arowana Tetras are native to the Amazon and Orinoco River Basins, which span across Brazil, Guyana, and Venezuela in South America. These Tetras inhabit diverse aquatic environments, encompassing various habitats such as slow streams, irrigation canals, and the meandering sections of large rivers. Their distribution reflects their adaptability to a range of water conditions and demonstrates their ability to thrive in different ecological settings within their natural range.
Breeding
Regrettably, comprehensive information regarding the breeding habits of the Arowana Tetra remains elusive. Furthermore, there are no documented records of successful breeding attempts of these Tetras in captivity. Consequently, our understanding of their reproductive behaviour and the specific requirements for breeding them remains limited.
Diet & Feeding
In the home aquarium, the Arowana Tetra demonstrates a favourable acceptance of various high-quality dried food options, including granules, flakes, and sinking pellets. These specially formulated modern food products are designed to meet the nutritional requirements necessary for the fish's overall health and well-being. Additionally, incorporating occasional feedings of live, frozen, or freeze-dried offerings such as bloodworms, daphnia, and tubifex can provide supplementary benefits to the fish's dietary needs and enhance their overall vitality.
However, it is important to note that bloodworms should be regarded as an occasional treat rather than a staple diet, as they may pose challenges for digestion and potentially lead to blockages. As an omnivorous species in its natural habitat, the Arowana Tetra may also consume vegetable matter. While most commercial fish foods encompass this aspect in their formulations, including blanched vegetables such as spinach, broccoli, and zucchini can serve as a beneficial dietary supplement. Maintaining a balanced feeding routine is crucial, avoiding overfeeding and promptly removing any uneaten food to preserve water quality.
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