Petrocephalus okavangensis

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Petrocephalus okavangensis Kramer, Bills, Skelton & Wink, 2012

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drawing shows typical species in Mormyridae.

分類 / Names 俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa

Teleostei > Osteoglossiformes (Bony tongues) 骨舌魚目 (Bony tongues) > Mormyridae (Elephantfishes) 象鼻魚科 (Elephantfishes)
Etymology: Petrocephalus: Latin, petra = stone + Greek, kephale = head (Ref. 45335); okavangensis: The species name refers to the Okavango River (Ref. 91771).

Environment: milieu / climate zone / 深度上下限 / distribution range 生態學

; 淡水 居於水底的.

分布 國家 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri

Africa: Okavango River drainage system, from the headwaters in Angola in the north, to the Makgadikgadi Salt Pan region in Botswana in the south (Ref. 79613, 91771). Also reported from the Zambezi in Angola (Ref. 120641).

大小 / 重量 / 年齡

成熟度: Lm ?  range ? - ? cm
Max length : 9.5 cm SL 雄魚/尚未辨別雌雄; (Ref. 91771)

簡短描述 檢索表 | 型態特徵 | 形態測量圖

背棘 (總數) : 0; 背的軟條 (總數) : 20 - 24; 臀棘: 0; 臀鰭軟條: 27 - 32. Diagnosis: Body depth 26.1-34.8% of standard length; head length 23.2-27.4% of standard length; preanal length 53.8-61.9% of standard length; dorsal fin length 14.5-19.5% of standard length; length of anal fin 24.7-28.6% of standard length; depth of caudal peduncle 26.4-34.9% of its length; number of anal fin rays 27-32; number of scales in lateral line row 37-38; number of scales around caudal peduncle 12 (Ref. 91771).
Body shape (shape guide): fusiform / normal.

生物學特性     字彙 (例如 epibenthic)

Hardy and eurytopic species, common in both swamp and river (Ref. 79613). Collected under papyrus root stocks in the Guma Lagoon (Ref. 91771).

Life cycle and mating behavior 成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚


主要參考資料 Upload your references | 參考文獻 | 合作者 | 合作者

Kramer, B., R. Bills, P. Skelton and M. Wink, 2012. A critical revision of the churchill snoutfish, genus Petrocephalus Marcusen, 1854 (Actinopterygii: Teleostei: Mormyridae), from southern and eastern Africa, with the recognition of Petrocephalus tanensis, and the description of five new species. Journal of Natural History 46(35-36):2179-2258. (Ref. 91771)

IUCN 瀕危狀態 (Ref. 130435: Version 2025-1)


CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

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網路資源

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | 檢查 FishWatcher | CISTI | Catalog of Fishes: 屬, 種 | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | 樹狀分類階層 | Wikipedia: 去, 搜尋 | Zoobank | 動物學的記錄

Estimates based on models

Phylogenetic diversity index (參考文獻 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01549 (0.00684 - 0.03506), b=2.86 (2.68 - 3.04), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).
營養階層 (參考文獻 69278):  3.2   ±0.4 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100). 🛈