分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Atheriniformes (Silversides) >
Bedotiidae (Madagascar rainbowfishes)
Etymology: Rheocles: Greek, rheos = stream + Greek, kles, kleis = straits; vatosoa: Named for its jewel-like coloration (vatosoa a Malagasy word for crystal or gemstone); noun in apposition.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 大洋性. 熱帶
Africa: Madagascar.
非洲: 馬達加斯加。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 7.9 cm SL 雄鱼/尚未辨别雌雄; (Ref. 42716)
背棘 (总数) : 5 - 7; 背的软条 (总数) : 11 - 15; 臀棘: 1; 臀鳍软条: 14 - 18; 脊椎骨: 35 - 38. Different from other congeners by possessing a single interdorsal pterygiophore (versus 3). Distinguished from R. sikorae and R. wrightae by having a shorter upper jaw (32.3-43.7%HL vs. 46.2-59), and the absence of black pigmentation of genital papilla; from R. pellegrini and R. derhami by the full squamation of the nape and chest (vs. naked or partially scaled); from R. lateralis by a shorter caudal peduncle (49-79.8 %SL vs. 84.6-96); and, from R. alaotrensis by predorsal scale row implantation (irregular vs. single row), and longer anal fin base (24.1-30.4 %SL vs. 17.2-21.7 %SL) (Ref. 42716).
藉由持有一个间背片支鳍骨的不同与其他同类.(对 3) 藉由有一个与 R. sikorae 与 R. wrightae 区分了较短的上颌 (32.3-43.7% HL vs.46.2-59), 与那缺乏生殖乳突的黑色颜色; 从 R. pellegrini 与 R. derhami 后颈与胸的藉由完整鳞片的排列;(vs. 裸露的或部份地覆有鳞片的) 从一个较短的尾柄的 R. lateralis;(49-79.8% SL vs.84.6-96) 并且, 从前背鳞片列种植 (不规则的 vs. 单一列) 的 R. alaotrensis, 与较长的臀鳍基底 (24.1-30.4% SL 和 17.2-21.7% SL 比较).(参考文献 42716)
Collected in the upper and middle reaches of the Lokoho river in the general vicinity of the town of Andapa. Found predominantly in clear streams over gravel or coarse sand bottoms. This streams are characterized by soft, slightly acidic to moderately alkaline water; total and carbonate hardness values < 1°DH and pH 6.8-7.5. Collected from both rapidly flowing rivers and small brooks. Stomach contents almost exclusively of macerated insect remains, most of terrestrial origin. A few remains of aquatic insect larvae suggesting a somewhat opportunistic feeding (Ref. 42716).
在 Andapa 的城镇的一般邻近区域中的 Lokoho 河的上游与中游中收集了。 主要在砾石或粗糙的砂质底部上的清澈溪流中发现。 这一个溪流特徵为柔软, 些微酸性对一般硷的水; 总数与碳酸硬度 <1 ° DH 与酸硷度 6.8-7.5. 快速地采集自两者流动的河与小的小溪了。 胃内含物几乎只浸软的昆虫保持, 大部分的陆栖起源。 意味着略微随机的进食的一些水生昆虫幼生残骸.(参考文献 42716)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
非洲: 馬達加斯加。
Stiassny, M.L.J., D.M. Rodriguez and P.V. Loiselle, 2002. Rheocles vatosoa, a new species of freshwater rainbowfish (Atherinomorpha: Bedotiidae) from the Lokoho River basin in Northeastern Madagascar. Cybium 26(1):71-77. (Ref. 42716)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-1)
濒危 (EN) (B1ab(i,ii,iii,v)); Date assessed: 23 June 2016
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
营养阶层 (Ref.
69278): 2.6 ±0.28 se; based on food items.
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
