Marine life  /  Triggerfish & filefish  /  Scribbled filefish
Reviewed 2026-09-06
Species entry

Scribbled filefish

Aluterus scriptus

A large flat fish that hangs head-down and drifts like a piece of debris.

Size
To 100 cm
Depth
2–45 m
Habitat
Reef slopes, rubble and open water
Active
Daylight
Range
Indo-Pacific
Rarity
Lembeh Strait
2 stars of 5, usually seen in a week
SP-01
scribbled filefish · full body · habitat
4:3 · min 2400px

To about 100 cm, olive to grey-brown with irregular blue lines and black dots scattered over the body, a long broom-like tail and a small mouth at the end of a drawn-out snout. It can pale or darken markedly and often carries a mottled pattern that matches whatever it is drifting beside.

It feeds on seagrass, algae, hydroids, gorgonians and tunicates, and adopts a head-down posture when at rest or when approached, which combined with the mottling makes it read as a piece of floating debris. Juveniles associate with drifting weed in open water. It drifts away steadily rather than fleeing, so a slow parallel approach usually holds it for a frame or two. Recorded from about 2 to 45 m.

Where to find:

LocationRarity Best monthsDepthHabitat
Lembeh Strait Indonesia editorial estimate
2 stars of 5, usually seen in a week
Year-round
2–45 m
Reef slopes, rubble and open water
Bali Indonesia editorial estimate
2 stars of 5, usually seen in a week
Year-round
2–45 m
Reef slopes and drop-offs
Anilao Philippines editorial estimate
2 stars of 5, usually seen in a week
Year-round
2–45 m
Reef slopes and rubble
Dauin & Dumaguete Philippines editorial estimate
2 stars of 5, usually seen in a week
Year-round
2–40 m
Reef edges and rubble
Papua New Guinea Papua New Guinea editorial estimate
2 stars of 5, usually seen in a week
Year-round
2–45 m
Coral reef and slopes
Islas Revillagigedo Mexico editorial estimate
2 stars of 5, usually seen in a week
Year-round
5–35 m
Rock and open water above it
Florida United States editorial estimate
3 stars of 5, a good week should turn one up
Year-round
3–30 m
Reef and gorgonians
Bahamas Bahamas editorial estimate
3 stars of 5, a good week should turn one up
Year-round
3–30 m
Reef and gorgonians
Cayman Islands Cayman Islands editorial estimate
3 stars of 5, a good week should turn one up
Year-round
3–30 m
Reef and gorgonians

Ratings are per location: 1 means found on most dives that look for it, 5 means a handful of records. Where enough dives have been logged the figure is calculated from them; otherwise it is an editorial estimate, and says so. We publish habitat and destination, not the dive site.

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