Overview
The Red Rainbowfish (Glossolepis incisus) is a intermediate freshwater species known for its brilliant red (male), olive (female) coloration. Males turn brilliant red. Mid to Top.
Origin & Appearance
Origin: Papua New Guinea.
Colors: Brilliant Red (male), Olive (female).
Body Shape: Deep Fusiform (oval/robust). Typical adult dimensions: 15.0 x 3.0 x 6.0.
Sexual Dimorphism: Strong; males more vivid colors and larger fins.
Tank & Water Requirements
| Min Tank Size | 53 gallons |
| Temperature | 72–77°F |
| pH Range | 7–8 |
| Water Hardness (GH) | 8-15 |
| Bioload | medium |
| Oxygen Demand | medium |
| Plant Safe | yes |
| Aquarium Position | Mid to Top |
Behavior & Activity
Active mid-level schooler; males intensify red color during competitive display swimming; needs space for speed
Speed: 55/100Aggression: 2/10diurnalSchooling (6+)
Breeding
Moderate; egg scatterer among mops/plants
Common Diseases
💊 Ich
Expert Notes
Males turn brilliant red