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三角燈© Birger A / CC BY-SA 3.0

三角燈

The Harlequin Rasbora is a small, popular aquarium fish known for its orange body marked with a striking black triangular patch — a look that really pops against a planted tank. Naturally peaceful and social, it forms tight schools with others of its kind, so keeping several together lets you enjoy its schooling behavior at its best. It readily eats both artificial and frozen foods, and its beginner-friendly care makes it a great choice for first-time fishkeepers. Adults stay compact at about 3 to 4 cm and typically live three to five years, making them easy to house alongside other peaceful, similarly sized fish in a well-planted aquarium.

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關於三角燈

The Harlequin Rasbora is a peaceful, beginner-friendly schooling fish with a striking black triangle marking. Grows to about 3-4 cm and lives 3-5 years.

迎接三角燈前需要了解的7件事

  1. 1Keep them in a school

    Kept alone or in twos or threes, Harlequin Rasboras tend to hide and rarely show their natural behavior. Bring home at least six to ten at once so they can form the tight, shimmering schools they're known for.

  2. 2Peaceful and community-friendly

    Harlequin Rasboras are peaceful and rarely bother other fish, making them a good match for other calm, small tankmates. Avoid housing them with aggressive or much larger fish, which can stress them into hiding.

  3. 3Shines in a planted tank

    Their orange body and black triangular marking stand out beautifully against a backdrop of green plants. Adding plants and driftwood for cover also helps them feel secure and settle in.

  4. 4Feeds on flake and frozen food

    They readily eat both flake or pellet food and frozen food, and are not picky eaters. Because their mouths are small, offer small-sized food in a few light feedings throughout the day.

  5. 5Sensitive to water changes

    Sudden shifts in water chemistry or temperature can stress this species. Take time to acclimate new arrivals gradually, and keep up with regular partial water changes afterward.

  6. 6Lifespan of 3-5 years

    With a stable environment, Harlequin Rasboras typically live around three to five years. Consistent water conditions and regular feeding go a long way toward a long, healthy life.

  7. 7Breeding takes some care

    They scatter eggs among fine-leaved plants, but breeding them successfully at home takes fairly specific conditions. If you're not aiming to breed them, a standard, well-maintained setup is all you need.

三角燈的常見問題

Q.Is this fish suitable for beginners?
A.Yes — Harlequin Rasboras are generally considered beginner-friendly and adapt well to typical aquarium conditions. That said, they're sensitive to sudden water changes, so acclimate them carefully when introducing them to a new tank.
Q.How many should I keep together?
A.Since they're a schooling species, it's best to keep at least six to ten together. Smaller groups tend to be skittish and spend more time hiding.
Q.Can it be kept with other fish?
A.Yes, its peaceful temperament makes it a good tankmate for other calm, similarly sized fish. Avoid pairing it with aggressive species or fish that are much larger.
Q.What should I feed it?
A.Harlequin Rasboras readily eat artificial flake or pellet food as well as frozen food, and aren't fussy eaters. Since their mouths are small, small-sized food fed in modest portions works best.
Q.How big does it grow and how long does it live?
A.Harlequin Rasboras stay small, reaching about 3 to 4 cm as adults, and typically live around three to five years. Their compact size makes them easy to fit into a modestly sized tank.

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