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Polydactylus malagasyensis  Motomura & Iwatsuki, 2001

African blackspot threadfin
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Image of Polydactylus malagasyensis (African blackspot threadfin)
Polydactylus malagasyensis
Picture by FAO

分类 / Names 俗名 | 同种异名 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii 辐鳍鱼纲 (条鳍鱼) > Perciformes (Perch-likes) > Polynemidae (Threadfins)
Etymology: Polydactylus: Greek, poly = a lot of + greek, daktylos = finger (Ref. 45335);  malagasyensis: Named for old name of Madagascar, Malagasy, its type locality (Ref. 40958).

环境 / 气候 / 范围 生态学

; 海洋; 半咸淡水 居于水底的; 深度上下限 5 - 62 m (Ref. 40958).    , preferred ?; 1°N - 35°S, 25°E - 51°E (Ref. 57343)

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Western Indian Ocean: Kenya, Mozambique, South Africa, and Madagascar. Likely to occur in Somalia and Tanzania.

大小 / 重量 / 年龄

Maturity: Lm ?  range ? - ? cm
Max length : 14.9 cm SL 雄鱼/尚未辨别雌雄; (Ref. 40958)

简单描述 型态特徵 | 形态测量图

背棘 (总数): 9; 背的软条 (总数): 12-13; 臀棘 3; 臀鳍软条: 12; 脊椎骨: 24. With 6 pectoral filaments; uppermost not reaching to (or extending slightly beyond) posterior tip of pectoral fin. Pectoral fin, rays long, 21-26% of SL; fin base long, 10-12% of SL; all rays branched except uppermost 1 or 2. Second dorsal spine long, 7-9% of SL. Well-developed swim bladder. A large black spot anteriorly on lateral line (Ref. 40958).

生物学特性     字汇 (例如 epibenthic)

Found in estuaries as well as offshore (Ref. 57343).

Life cycle and mating behavior 成熟度 | 繁殖 | 产卵场 | | 孕卵数 | 仔鱼


主要参考文献 Upload your references | 参考文献 | 合作者 | 合作者

Motomura, H., 2004. Threadfins of the world (Family Polynemidae). An annotated and illustrated catalogue of polynemid species known to date. FAO Spec. Cat. Fish. Purp. Rome: FAO. 3:117 p. (Ref. 57343)

世界自然保护联盟红皮书 (Ref. 115185)

  不评价 

CITES (Ref. 94142)

Not Evaluated

对人类的威胁

 




人类利用

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网络资源

BHL | Cloffa | Websites from users | 核实 FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishes of Iran | Fishtrace | GenBank(基因组, 核苷酸) | GloBI | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Scirus | SeaLifeBase | 树状分类阶层 | Wikipedia(转至, 搜寻) | World Records Freshwater Fishing | Zoobank | 动物学的记录

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01820 (0.00790 - 0.04194), b=3.04 (2.84 - 3.24), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
营养阶层 (Ref. 69278):  3.5   ±0.5 se; Based on size and trophs of closest relatives
回复力 (Ref. 69278):  高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
脆弱性 (Ref. 59153):  Low vulnerability (12 of 100) .