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Pyramid triplefin (Enneapterygius pyramis) — Tripterygiidae

Pyramid triplefin

Enneapterygius pyramis

The Pyramid triplefin (Enneapterygius pyramis) is a saltwater fish of the family Tripterygiidae that grows up to 3 cm.

Length
3.3 cm
Water
Saltwater
Depth
0.0–30.0 m
Activity
Diurnal
Body shape
Elongated (eel-like)
Substrate
Stone or rock
Danger
Harmless
Range
Oceania: American Samoa, Australia, Fiji, Tuamotu Is., French Polynesia, Guam and others

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Description

The Pyramid triplefin is a triplefin (Tripterygiidae) from shallow reef and rocky water of the Indo-West Pacific. The species grows to about 4 cm and has a slender, spindle-shaped body with the family's characteristic three separate dorsal fins and high-set eyes; males colour up more brightly in the breeding season. As a day-active bottom-dweller it perches on coral, rock and weed and picks small crustaceans, algae and biofilm. The fish is harmless to humans.

Frequently asked questions

How do you recognise the Pyramid triplefin?

The Pyramid triplefin has an elongate, eel-like body, is mainly brown and shows a spots pattern.

Where does the Pyramid triplefin live?

The Pyramid triplefin lives in the sea (marine waters) and is mostly found around stony or rocky ground. Oceania: American Samoa, Australia, Fiji, Tuamotu Is., French Polynesia, Guam and others

How big does the Pyramid triplefin get?

The Pyramid triplefin grows to a maximum of about 3 cm.

Is the Pyramid triplefin dangerous to humans?

No, the Pyramid triplefin is harmless to humans. This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status.

More photos

Pyramid triplefin (Enneapterygius pyramis) — Tripterygiidae — 2
S French Polynesia Fish Team 2014 (CC BY 4.0) via GBIF — AM
Pyramid triplefin (Enneapterygius pyramis) — Tripterygiidae — 3
Benoit Espiau (CC BY 4.0) via GBIF — Criobe
Pyramid triplefin (Enneapterygius pyramis) — Tripterygiidae — 4
Vetea Liao (CC BY 4.0) via GBIF — No Voucher
Pyramid triplefin (Enneapterygius pyramis) — Tripterygiidae — 5
Benoit Espiau (CC BY 4.0) via GBIF — Criobe
Fin

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All data

Identification

English name
Pyramid triplefin sourced
Scientific name
Enneapterygius pyramis
Family
Tripterygiidae
Other names
Pyramid triplefin; Pyramid threefin verified

Appearance

Size class
Small verified
Max length (cm)
3.3 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Brown sourced
Pattern
Spots sourced
Tail shape
Rounded inferred
Dorsal fins
Three separate sourced

Habitat & distribution

Water type
Saltwater sourced
Substrate
Stone or rock sourced
Min depth (m)
0.0 verified
Max depth (m)
30.0 verified
Natural range
Oceania: American Samoa, Australia, Fiji, Tuamotu Is., French Polynesia, Guam and others sourced
Origin
Native inferred

Behaviour & biology

Territorial
No inferred
Activity
Diurnal sourced
Reproduction
Separate sexes inferred
Sexual dimorphism
No inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred

For anglers

Fishing method
Small in size and barely an angling target; mostly caught incidentally or as baitfish. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless verified
First aid
This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status. verified

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

Same genus Enneapterygius

More from the family Tripterygiidae

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