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Top Fin Aquatics

Glowlight Tetra (Hemigrammus erythrozonus),

Glowlight Tetra (Hemigrammus erythrozonus),

Regular price $3.99
Regular price Sale price $3.99
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Glowlight Tetras are among the most beautifully colored fish in the freshwater aquarium hobby! With their silver bodies accented by a shimmering red/pink stripe running along the middle, these tetras are a vibrant addition to any aquarium. Their striking appearance and manageable size make them popular among both beginners and experienced aquarists. Growing no larger than 1 to 2 inches, they are perfect for small-sized tanks!


Glowlight Tetras are peaceful fish that thrive in community aquariums with other non-aggressive, similarly sized fish. They are a schooling species, and their schools create a mesmerizing display of colors. These tetras do best in densely planted aquariums with plenty of hiding spots, which can be provided with rocks, caves, driftwood, and live plants such as mosses, green cabomba, moneywort, and java ferns. To ensure their well-being, they should be kept in groups, and we offer them in packs of 6 and 12.


Glowlight Tetras spend most of their time in the middle and top levels of the aquarium. They are not recommended for newly set-up tanks, as they require well-cycled environments. Slow acclimation to new tanks is crucial due to their sensitivity to water parameter changes. Breeding them in captivity is challenging, requiring perfect water conditions. Their vibrant colors may dim at night, which is normal and not a sign of illness.


These tetras are omnivorous and readily accept most fish flakes and pellets. For optimal health and coloration, their diet should be supplemented with small foods like brine shrimp, daphnia, freeze-dried bloodworms, and tubifex.


  • Iridescent red stripe adds bright bursts of color to any aquarium setup
  • Small size makes them ideal for nano aquariums
  • Safe with plants
  • Completely peaceful
  • Very hardy and adaptable

Recommended Tank Parameters:

  • Temperature: 75° - 82° F (24° - 28° C)
  • pH: 5.5 - 7.5 (highly adaptable)
  • KH: 4 - 10 dKH
  • Minimum tank size: 10 gallons

Care Guidelines:

  • Diet: Omnivorous. Will readily accept most fish flakes and pellets, as well as small foods like brine shrimp, daphnia, freeze-dried bloodworms, and tubifex.
  • Social behavior: Peaceful, schooling/shoaling.
  • Origin: Tank-bred, indigenous to Rio Essequibo, Guyana
  • Average adult size: 1.5 - 2 inches (3.8 - 5 cm)
  • Average purchase size: 0.25 - 1 inch (0.6 - 2.5 cm)

Product photo is for reference only. Exact fish may vary in size and color.

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