Furry Diary

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Clown Triggerfish

Balistoides conspicillum (Bloch & Schneider, 1801)

Also called Bigspotted triggerfish

SpeciesShort profile

From Tropical and subtropical Indo-Pacific, from East Africa through northern Australia to Samoa and north to southern Japan, mainly on outer reef slopes.12

At a glance the quick version

Length50 cm123
Lifespan20 years2
Sizelarge

Maximum 50 cm total length in the wild; aquarium fish usually stay smaller (around 20 in maximum).

Can live up to about 20 years.

Striking polka-dot pattern
Hardy and easy to feed
Can learn to recognise and take food from its keeper
231

Looks how to spot one

Scaled, oval triggerfish

A thickset triggerfish with one of the boldest patterns on the reef. The black body carries large white polka dots on its lower half, a yellow leopard-like network on the back around the first dorsal fin, a yellow ring around the lips and a white band across the snout under the eyes. Young fish are black with small white spots and yellow touches on the snout.2

ColoursBlackWhite spotsYellow back patternYellow lips2

Personality what they are like

Confident, curious and strongly territorial, it grows bolder as it matures. It does best as a single showpiece fish with large, robust companions, and it is usually added to the tank last.23

Daily activity how busy a day looks

A daytime fish that roams the reef slope and retreats into caves and holes when it wants cover. It needs plenty of open swimming space and rockwork to explore.21

Grooming and care the hands-on bits

Rated easy to care for. It tends to rearrange decor, so arrange rockwork securely. Its teeth are sharp, so hand-feeding should be done with care.32

Home where they are happiest

A very large fish-only aquarium of about 1,135 litres (300 US gallons) or more, with caves. Water about 22 to 26 °C, pH 8.1 to 8.4, dKH 8 to 12, specific gravity 1.020 to 1.025.3

Food basics what goes in the bowl

A varied meaty diet of squid, krill, clams, small fish and hard-shelled shrimp, which also help wear down its ever-growing teeth. In nature it eats sea urchins, crabs and other crustaceans, molluscs and tunicates.312

Company who they like around

Solitary by nature; keep one per tank, choosing large, sturdy tankmates.123

The story where it all began

Marcus Bloch and Johann Gottlob Schneider described the species in 1801. Its vivid pattern has made it one of the most prized fish in the marine aquarium hobby.1

Fun facts for the dinner table

  1. 1

    It can lock its first dorsal spine upright to wedge itself firmly into a hole.2

  2. 2

    Its teeth keep growing throughout life, helping it crush shelled prey.2

  3. 3

    Parents guard their nest for about eight days until the eggs hatch.2

  4. 4

    Juveniles hide in small caves, often deeper than 20 m.2

Recognised by the official bits

IUCN Red List
Least Concern (assessed 11 January 2022)1
Taxonomy
Family Balistidae; described by Bloch and Schneider in 18011

The care rhythm Furry Diary remembers it for you

A typical home-care rhythm for a Clown Triggerfish. It is our own starting plan, not a vet's advice, and you can change every line in the app.

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  1. FishBase: Balistoides conspicillum summary fishbase.seused for distribution, depth, length, diet, IUCN status, behaviour, aquarium popularity
  2. Wikipedia: Clown triggerfish en.wikipedia.orgused for names, colour pattern, behaviour, lifespan, nesting, fun facts
  3. LiveAquaria: Clown Triggerfish liveaquaria.comused for aquarium care level, tank size, water parameters, diet, tankmates

Checked 2026-09-30. Text is written in our own words from these sources.