Eviota irrasa, Unpolished dwarfgoby

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Eviota irrasa Karnella & Lachner, 1981

Unpolished dwarfgoby
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Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Eviota irrasa   AquaMaps   Data sources: GBIF OBIS
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Image of Eviota irrasa (Unpolished dwarfgoby)
Eviota irrasa
Picture by Winterbottom, R.

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

Actinopteri > Gobiiformes (Gobies) 鱸形目 (Gobies) > Gobiidae (Gobies) 鰕虎魚科 (Gobies) > Gobiinae
Etymology: Eviota: No etymology given, suggested by Christopher Scharpt: from Latin 'eu' for 'true' and 'iota' for anything very small, in combination 'truly very small' referring to it as being the smallest vertebrate at the time it has benn described by Jenkins (thus, making the suggestion by Scharpt plausible.;  irrasa: From the Latin irrasa meaning unpolished or unshaved, in reference to the indiscrete nature of the pigmentation pattern of the head and trunk (Ref. 5289).  More on authors: Karnella & Lachner.

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

; 海洋 居於水底的; 深度上下限 0 - 3 m (Ref. 58018).   熱帶

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

Western Pacific: Cuyo Islands, Palawan, Philippines and the Southwest Islands of Palau.
西太平洋: Cuyo 島,巴拉望,菲律賓。 最近從東加記錄。 (參考文獻 53797)

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 1.8 cm TL 雄魚/尚未辨別雌雄; (Ref. 5289)

簡短描述 型態特徵 | 形態測量圖

背棘 (總數): 7; 背的軟條 (總數): 9; 臀棘 1; 臀鰭軟條: 8; 脊椎骨: 26. Characterized by the following: base of pectoral fin with two dark circular to oval spots, not sharply defined and often weakly connected, the upper spot somewhat larger than the lower; pectoral spots moderately pigmented, the intensity about equal to trunk bars; head (dorsally) and nape with dark, transverse, bars continuous over dorsal midline, and somewhat more heavily pigmented laterally; trunk with regular, dark, vertical bars, somewhat diffuse in outline, continuous over dorsal midline and usually not extending below midside anteriorly and much shorter posteriorly on peduncle; scale pockets dorsolaterally on trunk often weakly pigmented (Ref. 5289); characterized further by longitudinal scale series 24; ctenoid scales, absence on head, nape and base of pectoral fin; separated pelvic fins, only thin membrane joins bases; 8-11 branches on fourth pelvic ray; depth of body 4.1-4.7 in SL (Ref. 90102). Dorsal to anal fin-ray formula 9/8 (Ref. 116739).
胸鰭基底有兩個深色的圓形對橢圓形的斑點, 不是輪廓分明而且時常微弱地連接, 上面的斑點略微大於下面的; 胸的斑點一般有顏色,色彩濃度大約等於軀幹橫帶; 頭部 (背面) 與後頸有深色的, 橫跨的, 橫帶連續的背部中線之上, 與略微側面地的顏色更深的; 軀幹有規則又深色的, 縱帶, 略微擴散的輪廓, 連續的背部中線之上與通常不前面地向下延伸側面中央與非常短的在梗後面; 鱗囊背外側地在軀幹上時常模糊的.(參考文獻 5289)

生物學特性     字彙 (例如 epibenthic)


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

西太平洋: Cuyo 島,巴拉望,菲律賓。 最近從東加記錄。 (參考文獻 53797)

主要參考資料 Upload your references | 參考文獻 | 合作者 | 合作者

Karnella, S.J. and E.A. Lachner, 1981. Three new species of the Eviota epiphanes group having vertical trunk bars (Pisces: Gobiidae). Proc. Biol. Soc. Wash. 94(1):264-275. (Ref. 5289)

IUCN 瀕危狀態 (Ref. 123251)

  無危 (LC) ; Date assessed: 29 June 2018

CITES (Ref. 123416)

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

Preferred temperature (Ref. 115969): 25.1 - 29.3, mean 28.5 °C (based on 1584 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00575 (0.00261 - 0.01268), b=3.09 (2.91 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
營養階層 (Ref. 69278):  3.0   ±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.).
瀕危性 (Ref. 59153):  Low vulnerability (10 of 100) .