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Canthigaster axiologus Whitley, 1931

Pacific crown toby
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Native range | All suitable habitat | Point map | Year 2050
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Canthigaster axiologus   AquaMaps   Data sources: GBIF OBIS
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Canthigaster axiologus
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Ryukyu Islands country information

Common names: [No common name]
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Museum record from Okinawa, BPBM 19159, 24 mm (bad condition) (Ref. 83660).
National Checklist:
Country Information: ttp://en.wikipedia.org/wiki/Ryukyu_Island
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Randall, J.E., J.T. Williams and L.A. Rocha, 2008
National Database:

Common names from other countries

分類 / Names 俗名 | 同種異名 | Catalog of Fishes(, ) | ITIS | CoL | WoRMS | Cloffa

Teleostei > Tetraodontiformes (Puffers and filefishes) 魨形目 (Puffers and filefishes) > Tetraodontidae (Puffers) 四齒魨科 (Puffers) > Canthigasterinae
Etymology: Canthigaster: Greek, kanthos = the outer or inner corner of the eye, where the lids meet, 1646 + Greek, gaster = stomach (Ref. 45335);  axiologus: Species epithet 'axiologus' from the Greek words αξίος and λόγος, the latter Latinised to logus; it isnoun in apposition (CofF)..
  More on author: Whitley.

Environment: milieu / climate zone / depth range / distribution range 生態學

海洋 礁區魚類; 深度上下限 10 - 80 m (Ref. 90102).   

分布 國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri

Pacific: Japan to Australia, east to the Marshall Islands and Tonga; with records from Western Australia, from Exmouth Gulf northwards.

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 10.1 cm SL 雄魚/尚未辨別雌雄; (Ref. 83660)

簡短描述 檢索表 | 型態特徵 | 形態測量圖

背的軟條 (總數) : 9 - 11; 臀鰭軟條: 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 (Ref. 83660).

生物學特性     字彙 (例如 epibenthic)

Occurs in sheltered habitat, often on open sand and rubble bottom near reefs; but appears to be far less common than C. coronata (Ref. 83660). Solitary (Ref. 90102).

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚

Oviparous (Ref. 205).

主要參考資料 Upload your references | 參考文獻 | 合作者 : Matsuura, Keiichi | 合作者

Randall, J.E., J.T. Williams and L.A. Rocha, 2008. The Indo-Pacific tetraodontid fish Canthigaster coronata, a complex of three species. Smithiana, Publ. Aquatic Biodiv. Bull. 9:3-13. (Ref. 83660)

IUCN 瀕危狀態 (Ref. 130435)

  無危 (LC) ; Date assessed: 07 June 2011

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

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Estimates based on models

Preferred temperature (Ref. 115969): 24.1 - 29, mean 27.8 (based on 566 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.03631 (0.01554 - 0.08482), b=2.88 (2.69 - 3.07), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref. 93245).
營養階層 (Ref. 69278):  3.1   ±0.3 se; based on size and trophs of closest relatives
回復力 (Ref. 120179):  高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).