Maximum Size: In aquariums, male Neon Rainbowfish can grow to be about 3.25″ long, including their tails.
Females are usually smaller and plumper when mature.
Usually, mature Neon Rainbowfish are smaller than 3.25″ long, but rarely an old Neon Rainbowfish is bigger.
Behaviors: Most Rainbowfish are active swimmers and are rarely aggressive, but males do quarrel with each other.
Compatibility: Some recommended tank mates include, other varieties of Rainbowfish, Clown Loaches, Danios, Barbs, Gouramis, and many other medium-size aquarium fish.
Temperature: Rainbowfish can live pretty well from about 70 to 80 degrees F., but they’re probably most comfortable at about 75 degrees F.
Feeding: Premium Fish Food Flakes when small and small Premium Pellet Food when larger.
Water Conditions: Rainbowfish seem to be tolerant of a wide range of water conditions.