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🌊 Marine Least Concern 🌡️ Tropical

Pacific crown toby

Canthigaster axiologus Whitley, 1931
Max Length
10.1 cm
Max Weight
Lifespan
Trophic Level
3.1
Depth
10–80 m
Climate
Tropical
Resilience
High
Vulnerability
11.00/100
Typical Length
Depth Zone
reef

📖 Overview

Occurs in sheltered habitat, often on open sand and rubble bottom near reefs; but appears to be far less common than C. coronata . Solitary .

Scientific Name
Canthigaster axiologus
Authority
Whitley, 1931
Habitat
Marine
Climate
Tropical
Body Shape
Short and / or deep
IUCN Status
LC
Max Length
10.1 cm
Depth Range
10–80 m
Trophic Level
3.1
Resilience
High
Vulnerability
11.00/100
Salinity
30–40 ppt

🐟 Physical Description

Dorsal soft rays (total): 9 - 11; Anal soft rays: 9 - 10. This species is distinguished by the following characters: D 9-11 (usually 10, rarely 11); A 9-10 (usually 9); pectoral rays 15-18 (modally 16 in the North Pacific and 17 in the South Pacific); gill rakers 7-9; body depth between origins of dorsal and anal fins 3.0-3.3 in SL; head length (HL) 2.3-2.5 in SL; interorbital width 3.75-4.4 in HL; gill opening 4.8-5.55 in HL; origin of anal fin below or posterior to rear base of dorsal fin, the preanal length 1.25-1.35 in SL; longest dorsal ray 2.4-2.9 in HL; preserved colour pale grey to pale tan with 3 saddle-like, dark brown bars on body, similar to C. coronata, the edges of bars with close-set, small, pale-edged dark spots or short lines, irregularly alternating with unpigmented pale spots or lines; ventral part of body with or without small pale spots or pale-edged dark spots; across posterior interorbital and anterior occiput is a broad dark brown band; below base of pectoral fin is a dark brown spot; from chin to below gill opening, a narrow curved pale band edged in small dark spots; around eye is a pale area with radiating dark brown lines (except adjacent interorbital band); on head and abdomen is a midventral dark brown line varying from faint to conspicuous; lips pale, usually rimmed by a dusky band; fins pale grey, the upper and lower edges of caudal fin with or without a broad dark marginal band .: short and / or deep; Cross section: angular.

🌀 Behaviour

Behavioural data for Pacific crown toby is currently being reviewed.

🦐 Diet

Diet information for Pacific crown toby is currently being compiled.

🥚 Reproduction

🐣 Oviparous

Oviparous .

🌍 Habitat & Distribution

Marine; reef-associated; depth range 10 - 80 m . Tropical east to the Marshall Islands and Tonga; with records from Western Australia, from Exmouth Gulf northwards.

🌿 Ecology

Zone Preferences
🌊 Marine 🪸 Reef Associated
Trophic Level
3.1±0.3
🧍 Solitary

📐 Morphometrics

Length–Weight Relationship: W = 0.03631 × L2.88 (TL)
Max TL
10.1cm
Dorsal Rays
10
Anal Rays
10

🌡️ Water Parameters & Tolerance

Salinity Range
30–40ppt

🛡️ Conservation Assessment

IUCN Category
Least Concern
Assessment Date
2011

📊 Population Risk & Fisheries

Population Resilience
High
Minimum doubling time
Fishing Vulnerability
11.00/100
Low vulnerability
Trophic Level
3.1
Predator
Body Shape
Short and / or deep
Climate Zone
Tropical
Described By
Whitley, 1931

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