Red Rainbowfish - 6cm

Species Profile

• Scientific Name: Glossolepis incisus
• Common Name: Red Rainbow

  Adult Size:

  • Standard Form: 4–6 inches (10–15 cm)

  • Balloon Body Form: 3–4 inches (7.5–10 cm) due to compact body structure

• Life Expectancy: 5–8 years
• Habitat: Endemic to Lake Sentani in Papua, Indonesia. Inhabits clear, slow-moving waters rich in vegetation

Tank Requirements

• Minimum Tank Size: 30 gallons (114 liters) for a group; larger preferred for schooling behavior
• Ideal Temperature: 74–80°F (23–27°C)
• pH Range: 6.5–8.0
• Water Hardness: 8–20 dGH (moderate to hard water)
• Temperament: Peaceful and social; thrives in groups of 5 or more. Does well in community aquariums with other non-aggressive fish

Diet & Nutrition

• Omnivorous: Yes
• Diet: Eats a variety of foods, including high-quality flakes, micro pellets, live or frozen foods (brine shrimp, daphnia, bloodworms), and blanched vegetables (like spinach or peas)

Appearance

• Coloration: Males develop an intense, shimmering red coloration with age; females are more silver or bronze
• Balloon Body Form: Shorter, rounded body with a slightly exaggerated belly due to selective breeding
• Fins: Large, often slightly translucent with a red hue in males

Distinctive Features

• Balloon variant is a selectively bred form with a compact, rounded body, giving it a unique, eye-catching appearance
• Color intensifies with age and good diet, especially in dominant males
• Peaceful schooling behavior, making it ideal for planted or peaceful community tanks
• Needs space to swim, despite a smaller body — strong swimmers