分类 / 名称
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Teleostei >
Beloniformes (Needle fishes) >
Adrianichthyidae (Ricefishes) > Oryziinae
Etymology: Oryzias: Greek, oryza = rice; because of the habitat used by this fish (Ref. 45335); soerotoi: Named for Bambang Soeroto, a systematic ichthyologist at Sam Ratulangi University, Indonesia, in recognition of his enduring contributions to the exploration of fish diversity in Sulawesi.
Eponymy: H R Bambang Soeroto (1929 –2021) was a systematic ichthyologist who was also professor (1986) of geomorphology in the Department of Biology at Sam Ratulangi University, Indonesia. [...] (Ref. 128868), visit book page.
环境:氛围 / 气候带 / 深度上下限 / 分布范围
生态学
; 淡水 底中水层性.
Asia: Lake Tiu in central Sulawesi, Indonesia.
大小 / 重量 / 年龄
成熟度: Lm ?  range ? - ? cm
Max length : 2.9 cm SL 雄鱼/尚未辨别雌雄; (Ref. 103734); 3.2 cm SL (female)
简单描述
检索表 | 型态特徵 | 形态测量图
背的软条 (总数) : 8 - 9; 臀鳍软条: 18 - 21; 脊椎骨: 29 - 31. Oryzias soerotoi is distinguished from all congeners from Sulawesi by its brilliant orange coloration in the dorsal and ventral margins of the caudal fins of adult males. It differs by fewer scales along lateral midline (30-32) from O. sarasinorum (70-75), O. bonneorum (36-39), O. eversi (33-36), O. orthognathus (45-57), O. nigrimas (34-37), and O. matanensis (41-47). Other character useful to identify O. soerotoi is by having deeper body depth (21.6-24.8 vs. 13-15 in O. sarasinorum; and 17-20 in O. bonneorum). In addition, O. soerotoi has narrower body than O. matanensis (26.0-31.0) and O. profundicola (30.4-35.2); fewer dorsal-fin rays (8-9) than O. sarasinorum (11-12), O. bonneorum (12-13), O. eversi (10-12), and O. profundicola (10-14); fewer vertebrae (29-31) than O. sarasinorum (34), O. orthognathus (33), and O. nigrimas (32-33). It can be diagnosed from O. matanensis, O. marmoratus, O. profundicola, and O. hadiatyae, by the absence of dark brown blotches or bars on the lateral body in adult males. It can be further distinguished by its shorter anal-fin base (23.7-29.7) from O. marmoratus (31.4-36.9) and O. profundicola (37.4-41.4). It is distinct from O. hadiatyae by its short head (21.9-24.9 versus 27.2-37.1) and no pronounced concavity on the snout; from O. celebensis by the absence of distinct black stripes from the posterior midbody onto the caudal fin and of diffuse dark bars extended from dorsal and ventral to the midline; further from O. celebensis by having somewhat fewer pectoral-fin rays (9-10 vs. 10-11); from O. woworae, O. wolasi, and O. asinua by the absence of steel blue body coloration and of brilliant red or orangish coloration in the dorsal and ventral margins of the caudal peduncle; and larger size than O. woworae, O. wolasi, and O. asinua (up to 3.21 cm SL vs. 2.86 cm SL); from O. nebulosus by having a truncate caudal fin (vs. emarginate) and somewhat fewer lateral scales (30-32 vs. 32-36). It differs from O. mekongensis and O. pectoralis, Oryzias outside of Sulawesi having orange or reddish margins on the caudal fins of males by the possession of 8-9 dorsal-fin rays (vs. 5-7 in O. mekongensis and 6-7 in O. pectoralis) and attaining larger size (up to 1.67 cm SL in O. mekongensis and 2.23 cm SL in O. pectoralis) (Ref. 103734).
Body shape (shape guide): elongated.
The type locality, Lake Tiu in central Sulawesi, is surrounded by trees and mountains and
is characterized by a muddy substrate, and calm and transparent water, but darkly stained by decaying vegetation. Juveniles and young fish occurs in shallow habitats with dense vegetation (Ref. 103734).
生命周期和交配行为
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Based on aquarium observations, females carry eggs on a genital pore for several hours and deposit them onto submerged yarn (Ref. 103734).
Mokodongan, D.F., R. Tanaka and K. Yamahira, 2014. A new ricefish of the genus Oryzias (Beloniformes, Adrianichthyidae) from Lake Tiu, Central Sulawesi, Indonesia. Copeia 2014(3):561-567. (Ref. 103734)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-2 (Global))
极度濒危 (CR) (B1ab(iii)+2ab(iii)); Date assessed: 16 November 2018
人类利用
渔业: 没有兴趣
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特别资料
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网络资源
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=0.00437 (0.00167 - 0.01142), b=3.11 (2.89 - 3.33), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
营养阶层 (参考文献 69278) |
3.3 ±0.4 se; based on size and trophs of closest relatives |
渔业脆弱性 (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |