Description
Max 1.5-2". Yellow-gold body, red eye accent, black rim on anal fin (males).
From Amazon basin, widely tank-bred for decades.
Tank Setup
20 gallons minimum. More flexible water (pH 5.5-8.0, GH 4-15) — beginner tolerant.
Temperature 72-80°F.
Behavior
Peaceful, loose schoolers. Males display at each other but do not injure.
Adult males develop longer anal fin with red and black accent.
Why Beginners Love Them
Hardy, readily eat any food, tolerate wider parameters, show good color even in average tanks.
Often survive mistakes that kill neons or cardinals.