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红眼灯鱼© Jhartshorn / CC BY-SA 4.0

红眼灯鱼

The Red Eye Tetra is a mid-sized characin known for its silvery body, a ruby-red crescent above each eye, and a bold black band across the base of its tail. Hardy and adaptable, it's a great choice for beginners, and its active swimming brings constant motion and color to a planted tank. Because it thrives in groups, keeping a proper school is the best way to enjoy its natural behavior and dazzling flash. One thing to watch for: Red Eye Tetras can nip at the fins of slower tankmates, especially when kept alone, so choose companions carefully.

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关于红眼灯鱼

A hardy, beginner-friendly mid-sized tetra with a silvery body, red eyes, and a bold black tail band. Best kept in schools, but prone to nipping fins, so choose tankmates carefully.

迎接红眼灯鱼前需要了解的7件事

  1. 1Best Kept in Schools

    Red Eye Tetras can become restless and are more likely to nip at other fish's fins when kept alone. Housing them in a group lets them display their natural schooling behavior and brings lively movement to the whole tank.

  2. 2Hardy and Beginner-Friendly

    This species tolerates fluctuations in water quality and temperature fairly well, making it a solid choice for a first tropical fish tank. Even so, don't let its resilience make you complacent — keep up with regular water changes and basic tank maintenance.

  3. 3Watch for Fin-Nipping

    Red Eye Tetras have a tendency to nip at other fish's fins, a habit that becomes more pronounced when they're kept singly rather than in a group. It's best to avoid pairing them with slow-moving, long-finned fish such as veiltail guppies.

  4. 4Choosing Tankmates

    As fast, active swimmers, Red Eye Tetras do well alongside similarly hardy fish that can keep pace with them. Slower fish or those with large, flowing fins are more likely to get nipped, so choose companions with that in mind.

  5. 5Adult Size to Expect

    Fully grown, Red Eye Tetras reach about 7 cm in length. Since they're often sold smaller, it's worth planning your tank size and group numbers around their eventual adult size.

  6. 6Red Eyes and a Black Band

    A silvery body, a red glow across the upper half of each eye, and a broad black band at the base of the tail give this fish its name and its signature look. The contrast between the red and black stands out even more when the fish swim together in a group.

  7. 7An Active Swimmer

    Red Eye Tetras spend most of their time swimming actively through the middle and upper levels of the tank, and a group brings constant motion to the whole aquarium. Give them plenty of open swimming space in your layout so they can show off this behavior.

红眼灯鱼的常见问题

Q.Is the Red Eye Tetra suitable for beginners?
A.Yes — it tolerates fluctuations in water quality and temperature fairly well, which makes it a solid choice for people new to the hobby. As long as you keep up with basic maintenance like regular water changes, it isn't a difficult fish to keep.
Q.How many should I keep together?
A.It's best to keep a group rather than a single fish. Schooling brings out their natural behavior and also reduces how often they nip at each other's fins.
Q.How big do they get?
A.Adults reach about 7 cm in length. Since they're usually sold smaller, it helps to plan your tank size around their full-grown size in advance.
Q.Can they live with other fish?
A.Because they're active and prone to nipping fins, fast, hardy tankmates work best. It's best to avoid pairing them with slow swimmers or fish that have large, flowing fins.
Q.What should I consider for tank layout?
A.Since they swim actively in groups, a layout with plenty of open swimming space suits them well. Adding plants or hiding spots can also help keep the group's dynamics calm.

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