Overview
The Jewel Tetra, scientifically known as Hyphessobrycon bentosi, is a beautiful and active freshwater fish. Also occasionally referred to as the Ornate Tetra, this species is highly prized for its deep body shape, elegant finnage, and peaceful demeanor.
Distribution and Habitat
This species is native to the slow-moving tributaries, floodplains, and forested waters of the Amazon River basin in South America. They naturally inhabit environments with dense vegetation, submerged roots, and water tinted with tannins from decaying leaf litter.
Description of Jewel Tetra
The Jewel Tetra is a classic deep-bodied tetra that displays subtle yet stunning visual characteristics, especially when kept in optimal conditions.
Body shape:
They possess a laterally compressed, deep, and somewhat diamond-like body shape typical of many species in the Hyphessobrycon genus.
Color:
The body is generally translucent to silver or pale gold, often with a subtle pinkish or reddish hue under the right lighting.
Barbels:
This species does not possess barbels.
Snout:
They have a short, rounded snout with a small, terminal mouth adapted for feeding on small invertebrates.
Eyes:
The eyes are relatively large, featuring a distinct and striking bright red marking on the upper half of the iris.
Fins:
The dorsal fin is tall and often features a dark black blotch tipped with white. Males typically develop more extended dorsal and anal fins.
The Tail:
The caudal (tail) fin is deeply forked and mostly transparent, sometimes showing faint hints of color at the base.
Temper
They possess a very peaceful temperament, making them an excellent choice for a diverse community aquarium. Males may occasionally spar or display to one another, but this rarely results in injury.
Sociality
As a highly social schooling fish, they must be kept in groups of at least six individuals, though groups of eight to ten or more are highly recommended to reduce stress and encourage natural behaviors.
Activity
Jewel Tetras are active mid-water swimmers. They spend most of their day darting around the plants and playfully interacting with their conspecifics.
Keeping and Caring for Jewel Tetra
Providing a habitat that mimics their natural Amazonian environment is key to keeping these tetras healthy and vibrant.
Tank size:
A minimum tank size of 15 gallons (approx. 60 liters) is required for a small school, though larger tanks are always better.
Water Parameters:
Stability is crucial. They prefer soft, slightly acidic water conditions similar to their native blackwater habitats.
Temperature
Maintain the water temperature between 24-28°C (75-82°F).
pH
The ideal pH range is between 6.0 and 7.5.
Hardness
Water hardness should be kept relatively soft, ideally between 3 and 12 dGH.
Ammonia, Nitrite, Nitrate
Ammonia and Nitrite must always be at 0 ppm. Nitrates should be kept as low as possible, ideally below 20 ppm, through regular water changes.
Lighting
Moderate to dim lighting is preferred. Floating plants can be used to diffuse bright aquarium lights.
Water flow
They appreciate a gentle to moderate water flow, mimicking the sluggish streams they originate from.
Decorations and Plants
A dark substrate, driftwood, dried botanical leaves, and dense background planting will make them feel secure and help their colors pop.
Diet
Jewel Tetras are omnivorous and not fussy eaters. In the aquarium, they will readily accept high-quality dry flakes, micro-pellets, and frozen or live foods such as daphnia, brine shrimp, and bloodworms.
Some Feeding Tips
Feed them small amounts once or twice a day—only what they can consume in a couple of minutes. Variety is important for optimal health and coloration.
Breeding
They are egg-scatterers that exhibit no parental care. To breed them, set up a separate, dimly lit breeding tank with soft, acidic water and fine-leaved plants like Java Moss. Condition the adults with live foods, introduce a pair or small group, and remove them immediately after spawning to prevent egg predation. The fry will hatch in a few days and require infusoria until they are large enough for baby brine shrimp.
Conclusion
The Jewel Tetra is a hardy, beautiful, and engaging fish that brings life and a touch of elegance to any planted community aquarium. With basic care and a proper schooling group, they will thrive and reward you with years of enjoyment.
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