The red rainbow (Glossolepis incisus) is a medium sized fish native to Indonesia, specifically the Lake Sentani region of Northern New Guinea. This fish grows to an adult size of about 6 inches long. Adult males develop a brilliant red coloration and a much higher back, while females are olive green in color. In warmer water, only dominant males achieve the brilliant red coloration, while in cooler water all males do.
The red rainbow should be maintained in an aquarium of 55 gallons or larger. A dark colored soft, sandy substrate (CS6631) is a good choice. Driftwood (ZM2000) and live or artificial plants may also be incorporated.
The red rainbow prefers a temperature of 72°F to 77°F, a pH of 7.0 to 8.0, and a hardness of of up to 10 to 20°H. These rainbows will not do well in soft, acidic water.
The red rainbow is an active, high energy fish. It is generally very peaceful, but may disturb slower moving or shy species with it's high activity. Good tank mates include other species of rainbows, larger tetras, barbs, danios. cory catfish, and many loricariid catfish. The red rainbow ca be a very skittish fish and will do best when kept in a shoal of at least 6 to 8.
In the wild, the red rainbow is an omnivore feeding on small aquatic crustaceans, worms, insect larvae and algae. In the aquarium it will readily accept most prepared foods. Good choices include flakes (AL165) and frozen bloodworms (SF4792) or brine shrimp (SF6777). For maximum color, growth, and health these fish will look their best when given probiotics (AL169) in addition to a balanced diet.