Kamaka rainbowfish
Melanotaenia kamaka
Also known as Lake Kamaka rainbowfish
Care at a glance
- Temperature
- 77–86°F (25–30°C)
- pH
- 6.8–8.0
- Adult size
- 2.8 in (7 cm)
- Minimum tank
- 29 gal (110 L)
- Temperament
- Peaceful
- Social behavior
- Schooling
- Swim level
- Middle
- Difficulty
- Easy
- Breeding
- Medium
- Rarity
- Rare
- Origin
- Lake Kamaka, Triton Lakes, West Papua, Indonesia
- Family
- Melanotaeniidae
Overview
A mid-sized rainbowfish that fits tanks the big species outgrow, easy to keep in a peaceful school of six or more. It is gentle and undemanding, good with other calm community fish of similar size, and rewards a settled group with constant midwater motion and dawn color. Feed the standard rainbowfish mix of flake and small granules with frozen daphnia, brine shrimp, and bloodworm. A group is comfortable in around 110 liters with plants and open water to swim through.
In the wild
The Kamaka rainbowfish is found only in Lake Kamaka, one of the remote Triton Lakes near the coast of West Papua, a clear lake with a muddy bottom and patchy plants ringed by forested limestone hills. Keep it warm, 25 to 30 degrees Celsius, in neutral to alkaline water at a pH of 6.8 to 8.0, with a soft substrate, some plants, and open swimming room.
Good to know
Melanotaenia kamaka, family Melanotaeniidae, was described by Allen and Renyaan in 1996 as one of three rainbowfishes from the Triton Lakes, and it stays around 7 centimeters, compact for its genus. Displaying males show steel-blue flanks and amber fins. Breeding is of medium difficulty, the fish laying adhesive eggs on plants or mops across several days.
Did you know
Its entire natural range is one small, remote lake in West Papua, yet most Kamaka rainbowfishes alive today were bred in home aquariums and have never seen it.
Tank mates
Kamaka rainbowfish is a peaceful, schooling species that keeps to the middle. These picks match on water type, temperature, pH, size and temperament.

Heiko's tetra
Moenkhausia heikoiFreshwater3.4 in (8.7 cm)29 gal (110 L)75–84°F (24–29°C)
Colombian bristlenose pleco
Ancistrus triradiatusFreshwater4.3 in (11 cm)29 gal (110 L)77–84°F (25–29°C)
Twin-striped barb
Desmopuntius gemellusFreshwater3.5 in (9 cm)29 gal (110 L)73–82°F (23–28°C)
Sharptail goby
Oligolepis acutipennisFreshwater5.9 in (15 cm)29 gal (110 L)75–82°F (24–28°C)
Orinoco peckoltia
Peckoltia lujaniFreshwater3.5 in (9 cm)29 gal (110 L)77–84°F (25–29°C)Dwarf spiny pleco
Micracanthicus vandragtiFreshwater2 in (5 cm)29 gal (110 L)79–86°F (26–30°C)
Common questions
What size tank does a Kamaka rainbowfish need?
A Kamaka rainbowfish needs at least 29 gal (110 L). It spends most of its time in the middle.
What temperature and pH do Kamaka rainbowfish need?
Kamaka rainbowfish are comfortable at 77–86°F (25–30°C) with a pH of 6.8–8.0.
How big do Kamaka rainbowfish get?
An adult Kamaka rainbowfish reaches about 2.8 in (7 cm).
Do Kamaka rainbowfish need a group?
Yes. Kamaka rainbowfish are a schooling species and should be kept in a group, not singly.
Where to buy
Some links may not be the exact species or variety.
- Imperial Tropicals Freshwater fish and inverts bred at a Florida hatchery
- The Wet Spot Tropical Fish Large selection of quarantined tropical freshwater fish, with live arrival guarantee and Next Day Air flat rate shipping to all US locations
…or ask your local fish store.
Appears in
Freshwater fish · Rainbowfish · Beginner fish · Schooling fish · Community fish
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Related species

Dwarf rainbowfish
Melanotaenia maccullochiFreshwater2.8 in (7 cm)20 gal (75 L)72–82°F (22–28°C)Batanta rainbowfish
Melanotaenia synergosFreshwater3 in (7.7 cm)29 gal (110 L)77–86°F (25–30°C)
Lake Furnusu rainbowfish
Melanotaenia mairasiFreshwater2.4 in (6.2 cm)29 gal (110 L)77–86°F (25–30°C)
Lake Kurumoi rainbowfish
Melanotaenia parvaFreshwater3.1 in (8 cm)29 gal (110 L)72–79°F (22–26°C)
Neon rainbowfish
Melanotaenia praecoxFreshwater3.1 in (8 cm)29 gal (110 L)73–82°F (23–28°C)
Ogilby's rainbowfish
Melanotaenia ogilbyiFreshwater3.1 in (8 cm)29 gal (110 L)75–84°F (24–29°C)
