🐟 Overview Scientific Name: Glossolepis incisus Common Names: Scarlet Rainbowfish, Red Rainbowfish, Salmon Red Rainbowfish, New Guinea Red Rainbowfish Origin: Lake Sentani and nearby tributaries in West Papua, Indonesia...
Scientific Name: Glossolepis incisus
Common Names: Scarlet Rainbowfish, Red Rainbowfish, Salmon Red Rainbowfish, New Guinea Red Rainbowfish
Origin: Lake Sentani and nearby tributaries in West Papua, Indonesia
Conservation Status: Endangered (due to habitat loss and pollution)
Adult Size: Typically 12 cm (4.7 inches), occasionally up to 15 cm (6 inches)
Lifespan: Around 5–8 years in captivity
Males: Deep scarlet-red body and fins, silver highlights, arched back with age
Females: Olive to golden body, more slender, transparent fins
Juveniles: Olive green with silvery sheen; males begin to turn red as they mature
Temperament: Peaceful and sociable
Schooling: Should be kept in groups of 6 or more
Activity Level: Very active; swim mid to top levels of the tank
Courtship: Males display to females and compete with other males, especially in the morning
| Requirement | Details |
|---|---|
| Minimum Tank Size | 55–60 gallons for a group |
| Temperature | 22–27 °C (72–81 °F) |
| pH Level | 7.0–8.5 (slightly alkaline) |
| Hardness | 8–20 dGH |
| Aquascape | Heavily planted, open swimming area, floating plants for cover |
| Water Flow | Moderate with good oxygenation |
| Lid | Required (they are strong jumpers) |
Type: Omnivore
Staple Foods: High-quality flakes or pellets
Supplements: Live or frozen foods like brine shrimp, bloodworms, daphnia
Feeding Frequency: 1–2 times daily, small amounts
Breeding Type: Egg scatterer (no parental care)
Spawning Conditions: Use spawning mops or fine-leaved plants
Egg Hatching: 7–10 days
Fry Feeding: Start with infusoria or liquid fry food, then transition to baby brine shrimp
Breeding Tip: Transfer eggs or parents after spawning to avoid predation
Compatible With:
Other peaceful rainbowfish
Tetras, rasboras, barbs, danios
Corydoras, peaceful gouramis, otocinclus
Avoid:
Aggressive or large predatory fish
Fin nippers or overly boisterous tankmates
Very small shrimp (may be eaten)
Color Fading: Often caused by stress, poor diet, or low group numbers
Jumping Risk: Always keep a secure lid
Water Quality: Maintain stable parameters and do regular water changes
Best Group Ratio: 2 males to 3+ females for balanced displays
Scientific Name: Glossolepis incisus
Size: Up to 15 cm (6 in)
Lifespan: 5–8 years
Temperament: Peaceful, active
Schooling: Yes (6+ recommended)
Difficulty: Moderate (due to tank size and water quality needs)
Best For: Medium to large peaceful community tanks with ample swimming space
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