分类 / 名称
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins) >
Acestrorhamphidae (American tetras) > Pristellinae
Etymology: Hemigrammus: Greek, hemi = half + Greek, gramma = letter, signal (Ref. 45335); serrazul: Name 'serrazul' from the type locality of the new species, Serra Azul Park.
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.
分布
领土 | FAO区域 | 生态系 | 标本纪录 | 分布图 | 简介 | Faunafri
South America: Brazil.
大小 / 重量 / 年龄
成熟度: Lm ?  range ? - ? cm
Max length : 3.8 cm SL 雄鱼/尚未辨别雌雄; (Ref. 138764)
简单描述
检索表 | 型态特徵 | 形态测量图
背的软条 (总数) : 9; 臀鳍软条: 21 - 25; 脊椎骨: 33. This species is distinguished from its congeners by the following set of characters: flank uniformly colored, without spots, i.e., no humeral and caudal spots, just a tiny and narrow longitudinal stripe; premaxillary teeth in two rows: outer with three to five tricuspid teeth, inner with five tetra- pentacuspid teeth; a narrow silvery/yellowish longitudinal stripe on flank, with slightly blackish upper eye portion in in vivo specimens; pored lateral-line scales 12-15 (mode 15); branched anal-fin rays 21-25 (mode 22); and small bony hooks on the tip of lepidotrichia of the second to fourth branched pelvic-fins rays present, these absent from the anal fin (Ref. 138764).
Body shape (shape guide): elongated; Cross section: compressed.
生命周期和交配行为
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Ferreira, K.M., A.C. Ribeiro and F.R. Carvalho, 2026. A new Hemigrammus (Characiformes:Acestrorhamphidae) from the rio Cuiabazinho drainages, upper rioParaguai basin. Neotrop. Ichthyol. 24(1):1-14. (Ref. 138764)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-2 (Global))
人类利用
渔业: 没有兴趣
工具
特别资料
下载 XML
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]. |
|
Bayesian length-weight
|
a=0.00589 (0.00226 - 0.01533), b=3.16 (2.94 - 3.38), 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 |
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). 🛈 |