Max Size: 5cm

Glowlight Tetra (Hemigrammus erythrozonus)

The Glowlight Tetra is a small and slender, attractive, peaceful, shoaling fish. Its friendly and active disposition and ease of care make it an ideal and famous fish for the community aquarium. It should be kept with similar-sized, non-aggressive species.

This Tetra is silver in colour and has a bright iridescent orangey-red stripe that continues from the snout to the base of its tail; the front of the dorsal fin is the same colour as the stripe. The anal and pelvic fins are transparent and edged in white.

Tank Mates for the Glowlight Tetra

1 ideal tank mate ideas for the Glowlight Tetra include:

Glowlight Danio(Celestichthys choprae)

Glowlight Tetra Variants

Albino Glowlight Tetra
Quick Facts
Scientific NameHemigrammus erythrozonus
Other NamesGlowlights, Fire Neon Tetra
Aquarium LevelMiddle
DifficultyBeginner - Intermediate
Best kept asGroups 6+
Lifespan2 - 4 years
Water Parameters
Water TypeFreshwater
PH5.5 - 7.5
GH3 - 15
74 - 82℉
23 - 28℃

Photos of the Glowlight Tetra

Glowlight Tetra
Glowlight Tetra
Glowlight Tetra
Glowlight Tetras
Glowlight Tetra
Glowlight Tetras
Glow Light Tetra
Glowlight Tetra
Glowlight Tetra School

Natural Habitat

The Glowlight Tetra originates in the Essequibo basin in Guyana. They have been found in the Potaro, Rio Essequibo, and Mazaruni Rivers in South America.

They inhabit forested areas in small tributaries off the main river channel. The water is usually stained a dark brown colour with tannins from decaying Organic matter and is often soft and highly acidic.

What to feed the Glowlight Tetra

The Glowlight Tetra will eat a variety of foods. It's essential to feed them small-sized food and to vary their diet.

They readily accept good quality crushed flakes, micro pellets and freeze-dried food. They also enjoy live and frozen fare such as brine shrimp and mosquito larvae. These Tetras will not eat any food that falls to the bottom of the tank so try not to overfeed them.

How to sex the Glowlight Tetra

It is easy to determine the male from the female Glowlight Tetra. Females have more rounded stomachs and larger bodies than males. In contrast, the males are generally smaller and more slender, particularly in the abdomen.

How to breed the Glowlight Tetra

Glowlight Tetras have successfully been bred in the home aquarium, but the process is understood to be somewhat challenging.

These fish will require a separate breeding tank with very soft, warm water and dim lighting; the tank should be heavily planted with fine-leaved plants such as java moss, or a spawning mop is also suitable.

It would be better to condition your fish with high-quality flake food or live food three to five times per day.

You will know when a female is ready to spawn as she becomes very plump. At this point, you should place your best-coloured male and the female in the breeding tank. When the couple is ready to spawn, the male will dart about the tank after the female, presently performing a courting display in which he flicks his fins and shimmies near the female. When courting finishes, both fish roll on their backs, the female discharges her eggs, and the male fertilizes them.

Regular spawning will produce around 100 to 150 eggs. The parents will not provide any parental care and will consume the eggs if given the opportunity, so remove them as soon as spawning is finished.

The eggs are susceptible to light, so keep the breeding tank dark. Hatching usually occurs one day later, and the fry becomes free-swimming a couple of days later.

The fry should first be fed infusoria or paramecium cultures and then on finely crushed flake food. After several days, you can provide them with freshly hatched brine shrimp and micro worms to help them grow.

Other Tetras of interest

African Moon Tetra(Bathyaethiops caudomaculatus)
African Red Eyed Tetra(Arnoldichthys spilopterus)
Black Darter Tetra(Poecilocharax weitzmani)
Black Line Tetra(Hyphessobrycon scholzei)
Black Neon Tetra(Hyphessobrycon herbertaxelrodi)
Black Phantom Tetra(Hyphessobrycon megalopterus)
View all Tetras
Date Added: 15/09/2020 - Updated: 22/11/2021 17:37:36