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Praealticus margaritatus (Kendall & Radcliffe, 1912)

Pearly rockskipper
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Image of Praealticus margaritatus (Pearly rockskipper)
No image available for this species;
drawing shows typical species in Blenniidae.


Fiji country information

Common names: [No common name]
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Known from Rotuma (Ref. 54980).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/fj.html
National Fisheries Authority: http://www.spc.org.nc/coastfish/Countries/fiji/fiji.htm
Occurrences: Occurrences Point map
Main Ref: Randall, J.E., 2005
National Database:

Common names from other countries

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

Teleostei > Blenniiformes (Blennies) 鱸形目 (Blennies) > Blenniidae (Combtooth blennies) 鳚科 (Combtooth blennies) > Salariinae
Etymology: Praealticus: Latin, prae = in front of + Latin, altus, alticus = nutritious.

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

海洋.   熱帶

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

Western Central Pacific: American Samoa and Fiji.
中太平洋東部: 美屬薩摩亞。

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 7.3 cm SL 雄魚/尚未辨別雌雄; (Ref. 54980)

簡短描述 型態特徵 | 形態測量圖

背棘 (總數): 12 - 13; 背的軟條 (總數): 17-19; 臀棘 2; 臀鰭軟條: 18 - 21. Upper lip edge generally partly crenulate; color note from description: females warm brown, paler on belly; head with a slight purplish tinge, darker on snout and lips; only a slight trace of crossbars; body with small, pale pearly spots, most numerous posteriorly; crest dark brown, thickly dotted with small pearly or bluish spots; pectorals dark brown; spinous dorsal fin dark brown with a series of large, oblique, oblong black spots, 1 on each membrane; second dorsal fin dark brown with numerous narrow, pale oblique streaks; caudal fin dark brown, appearing almost black; anal fin dark brown with darker margin; pelvic fins black. Males paler with pearly spots more distinct and more numerous anteriorly; head covered with small dusky spots; crest without white spots; large black spots only on first 2 membranes of dorsal fin. Anal soft rays rarely 18 or 21; segmented caudal rays 13-14 (typically 14) with middle 3-9 branched; lateral line pores 1-6 (Ref. 54980).

生物學特性     字彙 (例如 epibenthic)

Facultative air-breathing (Ref. 126274); Oviparous. Eggs are demersal and adhesive (Ref. 205), and are attached to the substrate via a filamentous, adhesive pad or pedestal (Ref. 94114). Larvae are planktonic, often found in shallow, coastal waters (Ref. 94114).

Life cycle and mating behavior 成熟度 | 繁殖 | 產卵場 | | 孕卵數 | 仔魚

Oviparous, distinct pairing (Ref. 205).中太平洋東部: 美屬薩摩亞。

主要參考資料 Upload your references | 參考文獻 | 合作者 : Williams, Jeffrey T. | 合作者

Springer, V.G., J.T. Williams and T.M. Orrell, 1991. Catalog of type specimens of recent fishes in the National Museum of Natural History, Smithsonian Institution, 2: Blenniidae. Smithson. Contrib. Zool. 519:28. (Ref. 10697)

IUCN 瀕危狀態 (Ref. 130435)

  無危 (LC) ; Date assessed: 27 March 2009

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

  無害處的




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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5001   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00741 (0.00335 - 0.01640), b=3.02 (2.83 - 3.21), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
營養階層 (Ref. 69278):  2.0   ±0.00 se; based on food items.
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).