Rosy Tetra | 2-2.5cms | Single

The Rosy Tetra (Hyphessobrycon rosaceus) is a small, peaceful, and colorful freshwater fish that is native to South America, specifically the rivers and streams of the Amazon Basin. Known for its beautiful pinkish or reddish hue, the Rosy Tetra is a popular aquarium fish, especially in community tanks. Its calm demeanor, easy care, and vibrant color make it an attractive choice for both beginners and experienced aquarists.
Key Characteristics
Scientific Name: Hyphessobrycon rosaceus
Size: 2–2.5 inches (5–6 cm)
Lifespan: 3–5 years
Coloration:
Rosy Tetras have a pinkish to reddish body, with a slightly transparent or silver tint along the belly.
The intensity of the color can vary depending on factors like diet, water quality, and overall health.
Shape:
Slim, torpedo-shaped body with a slightly forked tail.
Long dorsal and anal fins.
Temperament:
Peaceful and calm, making it ideal for community tanks.
Active swimmers, but not overly aggressive or territorial.
Tank Level:
Middle-to-top dwellers in the aquarium.
Water Parameters
Temperature: 72–80°F (22–27°C)
pH: 6.0–7.5 (slightly acidic to neutral)
Hardness: 2–15 dGH
Water Quality:
Prefers soft to moderately hard water.
Requires clean, well-oxygenated water with regular filtration and water changes to maintain optimal health.
Tank Setup
Tank Size:
A minimum of 10–15 gallons for a small school of Rosy Tetras. Larger schools require larger tanks (20 gallons or more).
Substrate:
Soft, smooth gravel or sand is ideal. Avoid rough substrates that can damage the fish’s delicate fins.
Decor and Plants:
Plant the tank with live plants like Java Fern, Amazon Sword, and Anubias.
Provide some rocks or driftwood to create hiding spots, though Rosy Tetras tend to enjoy open swimming areas.
Floating plants or leafy plants can give them a sense of security.
Filtration:
Moderate filtration is sufficient, as they prefer well-oxygenated water. A gentle filter is recommended, as strong currents can stress them out.
Lighting:
Moderate lighting works best for the Rosy Tetra. Too bright lighting can stress them, so dim or natural light is often preferred.
Diet
Type: Omnivorous
Preferred Foods:
High-quality flake or pellet food designed for small fish.
Live or frozen food like brine shrimp, daphnia, or bloodworms.
Vegetables like blanched spinach or zucchini can be fed occasionally.
Feeding Tips:
Feed 2–3 times a day in small amounts.
A varied diet is important to keep them healthy and to maintain their vibrant coloration.
Behavior and Tank Mates
Behavior:
Rosy Tetras are schooling fish, so they should be kept in groups of at least 6–8 individuals. A larger group will help reduce stress and display more natural schooling behavior.
They are peaceful and non-aggressive, making them great additions to community tanks.
Rosy Tetras are quite active, often seen swimming in mid-water or near the surface.
Suitable Tank Mates:
Peaceful community fish like Corydoras catfish, small tetras, guppies, rasboras, and peaceful gouramis.
Avoid aggressive species that may stress or harm the Rosy Tetra.
Avoid:
Larger or more aggressive fish, such as large cichlids or barbs, as they may bully or eat the Rosy Tetra.
Breeding
Difficulty: Moderate
Process:
Rosy Tetras are egg scatterers. They typically spawn in groups, with females releasing eggs and males fertilizing them.
The eggs are sticky and will adhere to plants, rocks, or other surfaces.
After spawning, the adults should be removed to prevent them from eating the eggs or fry.
The eggs hatch in 24–48 hours, and the fry will become free-swimming after 4–5 days.
Fry Care:
Feed the fry with infusoria or finely crushed flakes until they grow large enough for small live foods like baby brine shrimp.
Care Tips
Keep Rosy Tetras in a well-maintained, clean tank to avoid common diseases like ich.
Provide plenty of hiding spots and swimming space.
Maintain stable water parameters, especially temperature and pH.
Avoid overcrowding, as this can lead to stress and poor water quality.
Regular water changes (25% per week) are essential to maintain water quality and fish health.
Why Choose a Rosy Tetra?
Vibrant Coloration: The pink to red coloration of the Rosy Tetra is visually striking, adding a splash of color to your tank.
Peaceful and Active: Rosy Tetras are peaceful and calm, ideal for community tanks with other small, peaceful species.
Low Maintenance: They are relatively easy to care for, making them perfect for both beginner and experienced aquarists.
Schooling Behavior: Their schooling behavior can add a natural, dynamic feel to your aquarium.
Conclusion
The Rosy Tetra is an attractive, peaceful, and hardy fish that makes an excellent addition to a well-maintained community tank. Its bright colors, calm temperament, and active schooling behavior make it a favorite for aquarists. With the right water conditions, diet, and tank mates, the Rosy Tetra can thrive for years, providing beauty and activity in your aquarium.