Festivum Cichlid (Mesonauta festivus) in a freshwater aquarium
Intermediate careSemi-aggressiveMid dwellerSouth America

Festivum Cichlid

Mesonauta festivus

The Festivum Cichlid (Mesonauta festivus) is a semi-aggressive fish that's a good step up once you have a little experience. Give it a tank of at least 250 litres (66 US gallons), water held at 75-86°F, and a pH of 6-7.5.

Care levelIntermediate
TemperamentSemi-aggressive
Min tank size66 US gal
pH range6-7.5
Temperature75-86°F
Max size7.9 in (20.0 cm)
Captive lifespan8-12 years
SchoolingNo
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Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.

Natural distribution

South America

  • South America

Regional colours match the stocking calculator's origin map.

Festivum Cichlid Tank Setup

Give them at least 250 litres (66 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 75-86°F and a pH around 6-7.5. They reach about 20 cm as adults, so don't be misled by the small juveniles sold in stores.

What Do Festivum 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.

Festivum Cichlid Tank Mates

Relatively peaceful for a cichlid. Pairs bond during breeding. Good with similarly-sized non-cichlids. The Festivum Cichlid is semi-aggressive, which is the first thing to weigh up when you choose tank mates. At around 20 cm fully grown, it needs tank mates that can hold their own against its size and appetite. 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 Festivum 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.

Festivum Cichlid - frequently asked questions

What size tank do Festivum Cichlids need?

Festivum Cichlids need a tank of at least 250 litres (66 US gallons). A bigger tank is always easier to keep stable, and gives them more room to settle in and behave naturally.

What water parameters do Festivum Cichlids need?

Keep them at 75-86°F with a pH of 6-7.5, 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 Festivum Cichlids eat?

Festivum 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 Festivum Cichlids good for beginners?

Festivum 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 Festivum Cichlids

  • Underestimating tank size - the minimum footprint is 250 litres (66 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.

Fish to avoid mixing with Festivum Cichlids

These well-known species are commonly sold alongside this fish but are not recommended tank mates - verify before purchasing.

  • Pea PufferPredator - Pea Puffer will eat or injure smaller tank mates
  • Betta (Male)Predator - Betta (Male) will eat or injure smaller tank mates
  • Serpae TetraFin nipper - will shred the fins of peaceful fish