Intermediate careActive communitySchool of 6+Australia / New Guinea

Rainbow Cichlid

Cichlidae sp.

The Rainbow Cichlid (Cichlidae sp.) is an active community fish that's a good step up once you have a little experience. Give it a tank of at least 100 litres (26 US gallons), water held at 72-82°F, and a pH of 6.5-8. Always keep a group of at least 6 - they feel safest in numbers.

Care levelIntermediate

TemperamentActive community

Min tank size26 US gal

pH range6.5-8

Temperature72-82°F

Max size6.3 in (16.0 cm)

Captive lifespan10-18 years

SchoolingYes · 6+ recommended

Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.

Natural distribution

Australia / New Guinea

Australia & Oceania

Regional colours match the stocking calculator's origin map.

Rainbow Cichlid Tank Setup

Give them at least 100 litres (26 US gallons). Cichlids are territorial and produce plenty of waste, so strong filtration and some rocks or wood to break up sight lines both help. Aim for 72-82°F and a pH around 6.5-8. Always keep a group of at least 6 of their own kind - kept alone or in pairs they tend to turn shy, nippy, or wash out in colour. They reach about 16 cm as adults, so don't be misled by the small juveniles sold in stores.

What Do Rainbow Cichlids Eat?

They're not fussy eaters - feed a varied diet, rotating good-quality dry, frozen, and gel foods rather than the same thing every day, and match the food size to their mouths.

Rainbow Cichlid Tank Mates

Keep in groups of at least 6. The Rainbow Cichlid is active community, which is the first thing to weigh up when you choose tank mates. It's a shoaling fish, so settle a group of 6 or more of its own kind before adding anything else - a stressed, lonely fish is far more likely to nip or hide. Before you buy, run your full stocking list through our stocking calculator. It weighs temperament, adult size, and water needs together, which a single species page can't do on its own.

Are Rainbow Cichlids Good for Beginners?

Doable once you test water regularly and catch problems before fish look sick. If this is your first tank, pick something more forgiving and come back later.

Rainbow Cichlid - frequently asked questions

What size tank do Rainbow Cichlids need?

Rainbow Cichlids need a tank of at least 100 litres (26 US gallons). A bigger tank is always easier to keep stable, and gives them more room to settle in and behave naturally.

How many Rainbow Cichlids should I keep together?

Keep a group of at least 6. Rainbow Cichlids are a shoaling species and become stressed, lose their colour, or hide when kept singly or in pairs.

What water parameters do Rainbow Cichlids need?

Keep them at 72-82°F with a pH of 6.5-8, steady rather than chased to an exact figure. In a cycled tank, ammonia and nitrite should both read 0 ppm, with nitrate kept low through regular water changes.

What do Rainbow Cichlids eat?

Rainbow Cichlids are omnivores and aren't fussy eaters. Feed a varied mix of good-quality dry, frozen, and gel foods, and match the food size to their mouths. Feed small amounts once or twice a day, and remove anything they don't eat.

Are Rainbow Cichlids good for beginners?

Rainbow Cichlids are best for keepers with a little experience. They are manageable once you test water regularly and catch problems early; a complete beginner may prefer something more forgiving first.

Common mistakes with Rainbow Cichlids

Buying fewer than 6 - Rainbow Cichlids need a proper school to feel secure; isolated individuals hide, fail to colour up, or become stressed.
Underestimating tank size - the minimum footprint is 100 litres (26 US gallons); impulse buying into a smaller tank leads to stress and shortened lifespan.

Building a community? Run the full list through the stocking calculator before you add anything else.