One of the most popular of all tetras, small and slender, they reach an adult size of only an inch and a half in length. The translucent, silvery-peach colored body of the glowlight tetra is divided by an iridescent red-gold stripe running from snout to tail. The stripe resembles the glowing filament in a light bulb or glowlight. The same iridescent red color is present on the leading edge of the dorsal fin while the anal and pelvic fins are edged in white. The trademark stripe of the glowlight tetra is shared by a species of rasbora, known as the red line or glowlight rasbora, and the two fish are sometimes confused.
Origin: Characidae The glowlight tetra’s origins are in the Essequibo basin in Guyana; they have been found in the Essequibo, Mazaruni, and Potaro Rivers.
It was introduced to the aquarium trade in 1933, bred in captivity, and it is exported from both Asia and Germany.
Care Level: Easy to Moderate Choose a dark substrate and provide plenty of vegetation, but leave some open space for swimming.
They prefer soft and slightly acid water, hardness from 6 to 15 dGH and pH of around 6.6.
The juveniles grow fast, spending most of their time under plant leaves. When they become one month old, the glowing stripes start appearing on their body.
Size: 1.5 Inches Female glowlights are larger-bodied and plumper than males.
The males are generally smaller and more slender, particularly in the abdomen.
Life Span: 5 Years The expected lifespan, if housed correctly.