Glowlight Tetra Breeding – An Overview - "glowlight tetra" by h080 is licensed under CC BY-SA 2.0.
Glowlight Tetra Breeding – An Overview - "glowlight tetra" by h080 is licensed under CC BY-SA 2.0.

Breeding fish can be a fascinating and rewarding experience for aquarium enthusiasts. One popular species for breeding is the Glowlight Tetra, known for its vibrant colors and active behavior. While breeding Glowlight Tetras may require a bit of effort and attention, the process can be an exciting journey. In this article, we will provide an overview on how to breed Glowlight Tetras, from selecting breeding pairs to raising the fry, so you can enjoy the beauty of these fish in your own home aquarium.

This is simply an overview, so you may want to do some more research to be as well prepared as possible.

About Glowlight Tetras

Glowlight tetras (Hemigrammus erythrozonus) are a popular species of freshwater fish among aquarium enthusiasts. They are native to the blackwater streams of South America, and they are known for their distinctive and vibrant colors, which include bright red-orange stribe along their bodies. They are a peaceful and active fish that can coexist with other non-aggressive species in a community aquarium. Glowlight Tetras are relatively small, growing up to 1.5 inches in length (around 4cm) and have a lifespan of up to several years in captivity. They are omnivorous and will feed on a variety of foods, including live, frozen, and freeze-dried foods, as well as flake and pellet food. Glowlight tetras are relatively easy to care for and breed, making them an ideal choice for beginner fish keepers and experienced hobbyists alike.

Glowlight Tetra Breeding

Glolight tetra breeding requires a bit of effort and attention to detail, but it is a fascinating process. Here are the general steps to follow:


  • You will need a breeding tank with a capacity of at least 5 gallons.
  • Keep the water temperature between 77-81°F (25-27 Celcius), with a pH of 6-7.5.
  • Add some Java Moss or other fine-leaved plants to provide hiding places for the fry.

Selecting Breeding Pairs

  • Choose healthy and matured adult glowlight tetras that are at least 1.5 inches (around 4cm) in length.
  • Provide them with a high-quality diet consisting of live, frozen, or freeze-dried foods.
  • Observe them closely for a few days, and select the most active and colorful males and females as breeding pairs.
  • You should be able to spot a pregnant glowlight tetra by a more rounded and bigger belly.


  • Feed the selected pairs a nutritious diet for a few weeks to improve their health and readiness to breed.


  • Place the breeding pairs in the prepared breeding tank and provide them with a suitable spawning site, such as a clump of Java Moss or a spawning mop.
  • The fish will scatter their eggs among the plants, and the eggs will hatch in about 24-36 hours.
  • Remove the adult fish from the breeding tank immediately after spawning to prevent them from eating the eggs or fry.
  • If the adult fish haven’t spawned within a couple of days, return them to their regular tank and try again with another pair or at another time.

Raising the Fry

  • The fry will become free-swimming in about three to five days after hatching.
  • Feed them with infusoria or artemia, fry food, or crushed flake food (they may need to be a bit larger for this) several times a day.
  • Gradually introduce them to larger food as they grow, and perform frequent water changes to keep the water quality high.

With proper care and attention, you can successfully breed and raise glowlight tetras in your own aquarium.

Glowlight Tetra Breeding – An Overview - "glowlight tetra" by h080 is licensed under CC BY-SA 2.0.
Glowlight Tetra Breeding – An Overview – “glowlight tetra” by h080 is licensed under CC BY-SA 2.0.


Glowlight tetra breeding can be a rewarding and fulfilling experience for fish keepers. By following the steps outlined in this article, you can successfully breed and raise these beautiful fish in your own aquarium. From selecting healthy breeding pairs to providing them with the right conditions for spawning, and nurturing the fry to maturity, breeding glowlight tetras requires attention to detail and patience. However, the end result of a thriving school of colorful and active fish makes the effort well worth it. With the knowledge gained from this guide, you can embark on your own journey of breeding glowlight tetras and enjoy the beauty of these fish in your own home.

As mentioned in the beginning, this is just an overview (which might suffice), but you may want to do some more research.