Glowlight Tetra

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The Glowlight Tetra, scientifically known as Hemigrammus erythrozonus, is a charming and popular freshwater fish species cherished for its striking coloration and peaceful nature. Originating from the clear waters of South America, specifically the Essequibo River basin in Guyana, this tetra species is a delightful addition to community aquariums. Here is a detailed description of the Glowlight Tetra:


  1. Size: Glowlight Tetras are small-sized fish, typically reaching an adult size of around 1.5 to 2 inches (3.8 to 5 centimeters).
  2. Body Shape: They possess a slender, torpedo-shaped body with a streamlined profile, which is a characteristic feature of most tetras.
  3. Coloration: The Glowlight Tetra is named for its vivid and eye-catching coloration. Their body is predominantly translucent or silver with a bright, iridescent stripe running horizontally along their sides. This stripe is typically bright orange or red, creating a stunning contrast against the fish's silvery body.
  4. Fins: They have clear, almost colorless fins, except for the adipose fin, which often shares the same vibrant color as their lateral stripe.


  1. Peaceful Nature: Glowlight Tetras are renowned for their gentle and non-aggressive temperament. They make excellent tankmates for other peaceful fish species and are suitable for community aquariums.
  2. Schooling Behavior: Like most tetras, Glowlight Tetras are social and thrive when kept in groups of at least six or more individuals. In a group, they exhibit natural schooling behavior, which enhances their sense of security.


  1. Origin: Glowlight Tetras are native to South America, particularly in Guyana, where they inhabit slow-moving streams and tributaries with dense vegetation.
  2. Aquarium Setup: To recreate their natural habitat, provide an aquarium with ample plant cover, driftwood, and subdued lighting. They prefer water conditions with a temperature range of 75-82°F (24-28°C) and a pH level between 6.0 and 7.5.


  1. Omnivorous: Glowlight Tetras are omnivorous and accept a variety of foods. They thrive on high-quality flakes, pellets, and a diet that includes live or frozen foods such as brine shrimp, daphnia, and bloodworms. Offering a balanced diet contributes to their overall health and color vibrancy.


  1. Egg Scatterers: When breeding, Glowlight Tetras are egg scatterers. They release their adhesive eggs among fine-leaved plants, and the adults may consume their own eggs if not removed promptly. A separate breeding tank with a mesh or marbles to protect the eggs from being eaten is advisable.

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