分类 / 名称
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Teleostei >
Gobiiformes (Gobies) >
Gobiidae (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.
环境:氛围 / 气候带 / 深度上下限 / 分布范围
生态学
海洋 礁区鱼类; 深度上下限 0 - 3 m (Ref. 58018). 热带
Western Pacific: Cuyo Islands, Palawan, Philippines and the Southwest Islands of Palau.
西太平洋: Cuyo 岛,巴拉望,菲律宾。 最近从东加记录。 (参考文献 53797)
大小 / 重量 / 年龄
成熟度: Lm ?  range ? - ? cm
Max length : 1.8 cm TL 雄鱼/尚未辨别雌雄; (Ref. 5289)
简单描述
检索表 | 型态特徵 | 形态测量图
背棘 (总数) : 7; 背的软条 (总数) : 9; 臀棘: 1; 臀鳍软条: 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).
Body shape (shape guide): elongated; Cross section: compressed.
胸鳍基底有两个深色的圆形对椭圆形的斑点, 不是轮廓分明而且时常微弱地连接, 上面的斑点略微大于下面的; 胸的斑点一般有颜色,色彩厚度大约等于躯干横带; 头部 (背面) 与后颈有深色的, 横跨的, 横带连续的背部中线之上, 与略微侧面地的颜色更深的; 躯干有规则又深色的, 纵带, 略微扩散的轮廓, 连续的背部中线之上与通常不前面地向下延伸侧面中央与非常短的在梗后面; 鳞囊背外侧地在躯干上时常模糊的.(参考文献 5289)
生命周期和交配行为
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
西太平洋: Cuyo 岛,巴拉望,菲律宾。 最近从东加记录。 (参考文献 53797)
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)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-2 (Global))
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基于模型的估算
系统发育多样性指数 (参考文献 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00692 (0.00283 - 0.01691), b=3.09 (2.92 - 3.26), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
营养阶层 (参考文献 69278) |
3.0 ±0.3 se; based on size and trophs of closest relatives |
回复力 (参考文献 120179) |
高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.). |
渔业脆弱性 (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |