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Croaking gourami© Howard Jelks, U.S. Geological Survey / Public domain

Croaking gourami

The croaking gourami is a small gourami that lives in rice paddies and wetlands across Southeast Asia. Its pale brown body with dark lengthwise stripes looks modest, but a special mechanism in its pectoral fins lets it make a croaking, grunting sound. Adults usually measure around 4 cm and reach at most 8 cm, and the species is considered suitable for beginners. During breeding it builds a bubble nest at the surface, which makes it a good match for anyone who enjoys quietly watching natural behavior.

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Croaking gourami key facts

Care level
Beginner-friendly
Lifespan
Few reliable data
Size
Up to 8 cm TL, commonly about 4 cm (FishBase)
Temperature
22〜28℃
Diet
Mainly carnivorous (small frozen/live foods, prepared foods)
Water Temperature & Quality
22-28°C, pH 6.0-8.0, 5-19 dH (FishBase). Adapts to a wide range of water.
Aquarium
Seriously Fish suggests a 60 x 30 cm footprint. Plant heavily with floating cover and keep flow gentle. It jumps and needs humid air above the water, so keep a gap under a tight lid.
Tank Mates & Compatibility
Peaceful except when breeding; can be kept in pairs or groups with peaceful small fish.
Diet & Feeding
Eats zooplankton, crustaceans and insect larvae in the wild. It accepts prepared food, but offer plenty of frozen or live Daphnia, Artemia and bloodworm.
Breeding & Egg-laying
The male builds a bubble nest among plants and the pair spawn in an embrace. Soft, slightly warmer water is said to trigger breeding. Fry need warm, humid air above the water for the labyrinth organ to develop.
Health & Cautions
It has established outside its native range, so never release it.
TraitsTropical FishGouramiAnabantoidSound-producing

About Croaking gourami

The croaking gourami is a small Southeast Asian gourami known for making a croaking sound with its pectoral fins. Pale brown with dark lengthwise stripes, it builds a bubble nest and usually reaches about 4 cm, up to 8 cm. Beginner-friendly.

7 things to know before welcoming a Croaking gourami

  1. 1The Croaking Sound

    A special mechanism in the pectoral fins lets this fish produce a croaking, grunting sound, and this is its most distinctive trait. The sound is faint, so you may only hear it in a quiet room with your ear near the tank. Whether you hear it depends on the individual and the situation, so treat it as a bonus rather than a guarantee.

  2. 2A Small Fish

    Adults usually reach around 4 cm and at most 8 cm in total length (FishBase), so they are compact. They suit smaller tanks, and adding hiding places and plants gives them a calm space where their natural behavior shows.

  3. 3Beginner-Friendly

    The species is rated as beginner-friendly and does not call for especially demanding care. Because it is small with a tiny mouth, pay attention to food size and avoid sudden changes in water quality. Reliable data on lifespan is scarce, so it is best to bring one home expecting a long commitment.

  4. 4Bubble Nests and the Surface

    This fish builds a bubble nest to breed, so floating plants or leaves near the surface help it feel settled. Strong currents can break a nest, so keep the filter flow gentle. Gouramis breathe air at the surface, so if you use a lid, leave a gap between it and the water.

  5. 5Choose Calm Tank Mates

    This is a gentle fish, so boisterous species and fin-nippers make poor tank mates. Choose small, peaceful companions so it does not lose out at feeding time. Males can be territorial toward each other, so watch how they get along when you combine them.

  6. 6Feed Small Foods

    Its mouth is small, so fine-grained prepared foods and small frozen foods are a good fit. Uneaten food fouls the water, so feed small amounts and watch how much is eaten. It can be slow and gentle at meals, so check that other fish are not taking all the food.

  7. 7Preparing and Health Checks

    Set up the tank ahead of time and bring the fish home once the water is stable. Acclimate it slowly and avoid sudden shifts in temperature or water quality. If you notice changes such as clamped fins, hanging motionless, or a drop in appetite, check the water quality first.

Frequently asked questions about Croaking gourami

Q.Does the croaking gourami really make sounds?
A.Yes, it is known for producing a croaking, grunting sound through a special mechanism in its pectoral fins. The sound is faint and how well you hear it varies with the individual and the surroundings. Try observing it in a quiet room.
Q.Can a beginner keep this fish?
A.It is rated as beginner-friendly. Being small and gentle, it is manageable if you follow the basics, such as avoiding sudden water changes and offering small foods.
Q.How large does it grow?
A.Adults usually reach around 4 cm in total length and at most 8 cm (FishBase). It is small, but hiding places and plants will help it feel secure.
Q.How long does it live?
A.Reliable data on its lifespan is scarce, so no clear figure can be given. Keep up regular water care and observation, and plan for a long-term commitment.
Q.Can it live with other fish?
A.It is a gentle fish, so small and peaceful tank mates suit it best. Avoid very active fish and fin-nippers, and keep an eye out for territorial behavior between males.

Useful tools for Croaking gourami 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 alerts⚡Electricity 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 Croaking gourami in the encyclopedia

View Croaking gourami encyclopedia entry →

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

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