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Flag Cichlid© Citron / CC BY-SA 3.0

Flag Cichlid

The Flag Cichlid is a South American species named for the bold black stripe that runs diagonally from its snout through the eye to the base of the dorsal fin, resembling a banner. Its body is tall and laterally compressed, giving it a graceful, unhurried presence in the tank. Festivums are known for their calm temperament, making them easier to keep alongside other fish than many cichlid relatives. Reaching a manageable 10 to 12 cm as adults, they don't require an oversized setup, which makes them a good choice for beginners. Set against a backdrop of live plants and floating vegetation, their striking pattern and relaxed swimming style make them a natural centerpiece for a nature aquarium.

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Flag Cichlid key facts

Care level
Beginner-friendly
Lifespan
5-8 years
Size
10-12cm
Temperature
24〜28℃
Diet
Prepared foods, frozen bloodworm, brine shrimp, vegetable matter
Tank
120 x 38cm (about 137 litres) or larger. Provide cover with wood and plants; floating plants over the surface help it settle.
Water Temperature & Quality
24-28C, pH 6.0-8.0 with around 6.5 suggested, hardness up to 5 dGH.
Tank Mates
Peaceful, and suits eartheaters, Apistogramma, tetras, barbs and small catfish. It turns more aggressive when breeding.
Diet & Feeding
It accepts the majority of prepared foods. Supplement with frozen bloodworm and brine shrimp, plus some vegetable matter.
Breeding & Spawning
In excess of 200 eggs are laid on a flat stone. They hatch in two to three days, and fry are free-swimming three to four days later.
Health & Notes
It may jump when startled, so always keep the tank covered.
TraitsCichlidSouth AmericaPeacefulMedium-sized fish

About Flag Cichlid

A beginner-friendly guide to the Flag Cichlid, a calm South American species known for its diagonal black stripe and an adult size of 10 to 12 cm.

7 things to know before welcoming a Flag Cichlid

  1. 1A Calm, Sociable Cichlid

    Festivums are one of the more even-tempered cichlids, making them easier to house with similarly sized tankmates. That said, any fish small enough to fit in their mouth may be seen as food, so choose tankmates with their size in mind.

  2. 2Pairs Well with Planted Tanks

    Their tall, laterally compressed body and unhurried swimming style stand out beautifully against live plants and floating vegetation. Since they may nibble or dig around soft-leaved plants while foraging or defending territory, hardy or rhizome-attached plants tend to hold up better.

  3. 3Adult Size and Tank Space

    Adults reach about 10 to 12 cm, and their tall body gives them more presence than the length alone suggests. A single fish can do fine in a tank around 60 cm, but a roomier setup helps reduce stress when housing them with other fish.

  4. 4Water Quality and Temperature

    Like many South American cichlids, festivums are sensitive to sudden shifts in water quality and temperature. Careful acclimation when introducing them, plus regular water changes, go a long way toward keeping them healthy.

  5. 5An Omnivore's Varied Diet

    Festivums are omnivores that accept everything from prepared pellets to frozen and live foods. Feeding a varied diet rather than relying on one food type supports both their coloration and overall condition.

  6. 6Daily Health Checks

    The depth of color in their signature black stripe and the sheen of their skin are useful indicators of condition. A drop in appetite or clamped fins can signal poor water quality or stress, so it's worth addressing promptly.

  7. 7Preparing Before You Bring One Home

    Before bringing a festivum home, set up hiding spots like driftwood and finish cycling the tank so it settles in more easily. They often stay tucked away while adjusting to a new environment, so give them time rather than rushing things.

Frequently asked questions about Flag Cichlid

Q.Is the Flag Cichlid suitable for beginners?
A.Yes, its calm temperament and manageable size make it a good choice for beginner aquarists. Avoiding sudden changes in water quality and acclimating it carefully during introduction will help keep it thriving.
Q.Can it be kept with other fish?
A.Festivums are relatively peaceful for a cichlid and generally do well with similarly sized tankmates. Just keep in mind that any fish small enough to fit in their mouth may end up as prey.
Q.Is it safe to keep in a planted tank?
A.Yes, it pairs well with live plants and floating vegetation. Since it may nibble or dig around softer plants, hardy or rhizome-attached species tend to fare better.
Q.How large does it grow?
A.Adults typically reach about 10 to 12 cm. Its tall, deep body gives it more visual presence than its length alone suggests.
Q.Are there any legal restrictions on keeping it?
A.The Flag Cichlid is not subject to CITES.

Useful tools for Flag Cichlid care

💧Aquarium Volume CalculatorCalculate water volume, weight, and heater wattage from tank dimensions🧪Water Quality CheckerFind compatible fish, shrimp, plants & corals based on pH, temperature & hardness🍽️Feeding GuideCheck feeding frequency, portion sizes & supplements by species and growth stage🤝Compatibility CheckerCheck compatibility between two species on a 5-level scale📊Fish Compatibility MatrixCheck fish compatibility at a glance with our matrix chart🔄Nitrogen Cycle GuideAuto-calculate bacteria colonization timeline for new tank cycling🗓️Seasonal Care CalendarMonthly care events and seasonal management tips at a glance🚿Water Change CalculatorAuto-calculate optimal water change frequency and volume by tank size and fish count🐠Stocking CalculatorCalculate max fish capacity for your tank size with overstocking alertsElectricity Cost SimulatorCalculate monthly and annual electricity costs for care equipment with presets🧬Breeding PlannerSelect parent varieties to view breeding schedules and offspring patterns🏞️Tank Layout PlannerGet substrate, plant & hardscape suggestions based on tank size and style🧮Care Cost SimulatorEstimate initial, monthly & annual costs by category, care level and quantity⚖️Species Comparison ToolCompare two species side by side: care difficulty, size, lifespan & temperature🎯Pet Match DiagnosticAnswer 7 questions to find your top 3 perfect pets📋Lifetime Cost SimulatorEstimate lifespan and lifetime costs by species for dogs, cats, reptiles and more🚚Transport Safety CheckerCheck transport safety score and precautions by category, season, method and distance💊Medication Dosage CalculatorCalculate proper medication dosage by body weight and medicine type for fish, reptiles, and small animals⏱️Quarantine & Acclimation TimerManage quarantine periods and acclimation steps with countdown timers. Includes recommended durations by species

Learn more about Flag Cichlid in the encyclopedia

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Care difficulty, lifespan, size and diet — all basics covered.

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