Kamaka Dwarf Rainbowfish – Melanotaenia kamaka
The Kamaka Dwarf Rainbowfish (Melanotaenia kamaka) is a beautiful smaller rainbowfish known for its shimmering blue-silver coloration, active schooling behavior, and peaceful temperament.
This species originates from Lake Kamaka in Indonesian New Guinea and is an excellent choice for planted community aquariums where a smaller, active rainbowfish is desired.
Key Features
- Beautiful blue, silver, and iridescent coloration
- Smaller rainbowfish species
- Peaceful and active community fish
- Best maintained in groups
- Excellent for planted aquariums
- Active mid-to-upper level swimmer
- Hardy when kept in clean, stable water
Fish Information
- Common Name: Kamaka Dwarf Rainbowfish
- Also Known As: Kamaka Rainbowfish
- Scientific Name: Melanotaenia kamaka
- Family: Melanotaeniidae
- Origin: Lake Kamaka, Indonesian New Guinea
- Water Type: Freshwater
- Temperament: Peaceful
- Adult Size: Approximately 2.5–3 inches
- Swimming Level: Middle to upper levels
- Diet: Omnivore
- Care Level: Easy to Moderate
Color and Appearance
Kamaka Rainbowfish develop an attractive metallic appearance with blue, silver, turquoise, and sometimes greenish tones across the body.
Mature males generally develop stronger coloration and a deeper body shape than females. Their colors are often most intense when kept in good water conditions, fed a varied diet, and maintained with other members of their species.
Recommended Group Size
Kamaka Rainbowfish are social fish and should be maintained in a group.
We recommend keeping at least 6, with groups of 8 or more preferred when aquarium size allows.
A larger group encourages natural behavior, reduces stress, and can improve coloration and displaying between males.
Recommended Aquarium Size
A 30-gallon aquarium or larger is a practical starting point for a group of Kamaka Dwarf Rainbowfish.
A longer aquarium footprint is especially beneficial because rainbowfish are active swimmers and appreciate open horizontal swimming space.
Recommended Water Parameters
- Temperature: Approximately 74–82°F
- pH: Approximately 7.0–8.0
- Water Hardness: Moderately hard
- Ammonia: 0 ppm
- Nitrite: 0 ppm
- Nitrate: Kept low through regular maintenance
Stable water quality is especially important. Rainbowfish generally respond poorly to neglected aquariums or sudden changes in water chemistry.
Aquarium Setup
Kamaka Rainbowfish look especially attractive in planted aquariums that combine vegetation with plenty of open swimming room.
- Use a fully cycled freshwater aquarium
- Provide reliable biological filtration
- Maintain good oxygenation
- Use gentle to moderate water movement
- Provide open horizontal swimming areas
- Add plants around the sides and rear of the aquarium
- Use a secure aquarium lid
- Perform regular partial water changes
Feeding
Kamaka Rainbowfish are omnivores and should receive a varied diet for the best health and coloration.
Suitable foods include:
- Quality tropical flakes
- Small pellets or micro pellets
- Frozen brine shrimp
- Frozen daphnia
- Frozen mysis shrimp
- Baby brine shrimp
- Occasional vegetable or spirulina-based foods
Feed small portions once or twice daily and avoid overfeeding.
Temperament
Kamaka Dwarf Rainbowfish are generally peaceful and work well in community aquariums with similarly sized, non-aggressive species.
They are active swimmers, so extremely shy or very slow-moving fish may be uncomfortable in a highly active rainbowfish community.
Compatible Tankmates
Potential tankmates include:
- Other peaceful rainbowfish
- Peaceful barbs
- Rasboras
- Medium-sized peaceful tetras
- Corydoras
- Peaceful loaches
- Peaceful gouramis
- Other similarly sized community fish
Avoid highly aggressive fish or species capable of swallowing them.
Male vs. Female
Mature males are generally deeper-bodied and develop stronger iridescent coloration.
Females tend to remain slimmer and may have more subdued silver coloration.
Sexing young fish can be difficult until they begin to mature.
Breeding
Like many rainbowfish, Kamaka Rainbowfish are egg scatterers.
Adults may spawn among:
- Fine-leaved plants
- Java moss
- Spawning mops
- Dense vegetation
Eggs may hatch over several days, and adults may consume eggs or fry. A separate breeding or grow-out setup is recommended when maximizing fry survival.
Plants and Aquascaping
These fish are excellent for planted aquariums because they generally do not damage healthy plants.
Good plant choices include:
- Anubias
- Java fern
- Cryptocoryne
- Vallisneria
- Amazon swords
- Java moss
- Floating plants
Plant the sides and rear heavily while leaving the center or front of the aquarium open for swimming.
Important Care Notes
- Keep in groups of at least six.
- Provide plenty of open swimming room.
- Maintain strong filtration and good oxygenation.
- Keep ammonia and nitrite at 0 ppm.
- Perform consistent partial water changes.
- Feed a varied diet for best coloration.
- Use a secure aquarium lid.
- Never release aquarium fish into local waterways.
Frequently Asked Questions
How large do Kamaka Dwarf Rainbowfish get?
They are a relatively small rainbowfish, generally reaching around 2.5–3 inches in aquarium conditions.
Are Kamaka Rainbowfish peaceful?
Yes. They are generally peaceful and suitable for community aquariums with compatible tankmates.
How many should I keep?
Keep at least six, with a larger group preferred when space allows.
What size aquarium do they need?
A 30-gallon aquarium or larger with good horizontal swimming space is recommended for a group.
Are they good for planted tanks?
Yes. Their blue-silver coloration contrasts beautifully with green plants, and they generally leave healthy plants alone.
Are Kamaka Rainbowfish really dwarf rainbowfish?
They are smaller than many commonly kept Melanotaenia species, but “Dwarf” is primarily a hobby or trade description rather than part of the official common name.
Where do Kamaka Rainbowfish come from?
The species is naturally restricted to Lake Kamaka, also called Kamakawaiar, in Indonesian New Guinea. FishBase records it as a freshwater species associated with shallow lake habitat.
Available at Tropical Treasures Wyo
Kamaka Dwarf Rainbowfish are available at Tropical Treasures Wyo in Cheyenne, Wyoming, when in stock.
Live fish are available for in-store purchase or local pickup only and are not available for shipping.
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