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Blackspotted puffer© H. Zell / CC BY-SA 3.0

Blackspotted puffer

The Blackspotted puffer is a puffer from Indo-Pacific coral reefs. Its body is scattered with black spots, and the dark markings around its eyes and mouth give it a dog-like face, which is why it is also called the "dogface puffer." Body color varies from gray to brown to yellow, so every individual has its own look. It is curious and can become quite engaging once settled in. Adults grow to a maximum of 33 cm in total length and can be feisty, so this species suits intermediate keepers. Prepare a spacious tank and plan to keep it on its own.

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Blackspotted puffer key facts

Care level
Intermediate
Lifespan
Few reliable data
Size
Up to 33 cm TL (FishBase)
Diet
Omnivore (molluscs, crustaceans, frozen foods, algae)
Water Temperature & Quality
Few species-specific temperature data. It is messy, so provide ample filtration and watch water quality.
Aquarium
It can exceed 30 cm, so a large tank with open swimming space is needed; secure rockwork so it cannot collapse.
Tank Mates & Compatibility
Solitary and territorial in the wild; it may nip fins, so choose large, robust tankmates.
Reef Compatibility
Not reef-safe: it eats corals (especially Acropora), crustaceans, molluscs, tunicates and sponges, so it does not suit reef tanks or invertebrate companions.
Diet & Feeding
Feed shelled foods such as clams and crustaceans, frozen foods and some algae; hard foods help wear down its continuously growing teeth.
Health & Cautions
It contains tetrodotoxin and must not be eaten. Yellow fish are hard to tell from the yellow form of A. meleagris. Collecting in Japanese waters must follow prefectural fisheries regulations.
TraitsMarine FishPufferfishNot Reef SafeJapanese Waters

About Blackspotted puffer

Learn about the Blackspotted puffer, a dog-faced puffer from Indo-Pacific coral reefs. This guide covers its traits, care basics, and adult size of up to 33 cm, for intermediate keepers.

7 things to know before welcoming a Blackspotted puffer

  1. 1Plan a roomy tank

    Adults reach up to 33 cm in total length and swim actively. A small tank restricts their movement, so choose a roomy tank sized for the fully grown fish.

  2. 2Best kept alone

    This puffer can be feisty and may nip slow-moving fish or those with long fins. Even members of the same species tend to fight, so plan on keeping a single fish per tank.

  3. 3Not for coral tanks

    In the wild this puffer lives on coral reefs, and it may nip at corals and small invertebrates. It is a poor fit for reef tanks or for keeping with shrimp and snails, so picture a fish-only setup.

  4. 4Feeding and teeth

    Puffer teeth keep growing and are worn down by chewing hard foods. Include chewy items such as shell-on shrimp and clams, and vary the diet. Check regularly that the teeth are not overgrown.

  5. 5Filtration and water changes

    This is a hearty eater, so leftovers and waste can foul the water quickly. Build in generous filtration capacity, and make regular water changes and water testing a habit.

  6. 6Toxin and handling

    Puffers are considered to carry toxins in their bodies, so never eat them. They may inflate when startled, so move the fish without taking it out of the water to keep it from gulping air.

  7. 7Check color and feeding

    Body color ranges from gray to brown to yellow, and the spot pattern differs from fish to fish. Along with the listing photos, ask the breeder whether the fish is eating well and what foods it has been fed so far.

Frequently asked questions about Blackspotted puffer

Q.Can a beginner keep one?
A.It is rated for intermediate keepers. Because adults reach up to 33 cm, should be kept alone, and foul the water easily, it is best to get used to marine fishkeeping first.
Q.How large does it grow?
A.Total length is reported at up to 33 cm (FishBase). Sizes vary between individuals, so choose a tank with the fully grown fish in mind.
Q.How long does it live?
A.There is little reliable information on lifespan, so no firm figure can be given. Assume a long commitment and make sure you can keep up the equipment and daily care before bringing one home.
Q.Can it live with corals or other fish?
A.It may nip at corals and invertebrates, and it can also nip the fins of other fish, so keeping it alone is the usual advice. If you consider tankmates, weigh the tank size and the other fish's temperament carefully.
Q.What should I feed it?
A.Focus on chewy foods such as shell-on shrimp and clams, and rotate the variety. Since puffer teeth keep growing, including hard foods helps wear them down.

Useful tools for Blackspotted puffer 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🏞️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🚚Transport Safety CheckerCheck transport safety score and precautions by category, season, method and distance⏱️Quarantine & Acclimation TimerManage quarantine periods and acclimation steps with countdown timers. Includes recommended durations by species

Learn more about Blackspotted puffer in the encyclopedia

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

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