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Cromeria nilotica Boulenger, 1901

Naked shellear
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Image of Cromeria nilotica (Naked shellear)
No image available for this species;
drawing shows typical species in Kneriidae.

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

Teleostei > Gonorynchiformes (Milkfishes) 鼠□目 (Milkfishes) > Kneriidae (Shellears) 克奈魚科 (Shellears)
Etymology: Cromeria: Perhaps related to the prehistoric Stone Age in eastern England; for the stone implements found in Cromer but needs more data.
Eponymy: Lord Cromer Evelyn Baring (1841–1917), 1st Earl of Cromer, was a soldier (1858–1877) and a particularly oppressive and racist colonial administrator. [...] (Ref. 128868), visit book page.
More on author: Boulenger.

Environment: milieu / climate zone / depth range / distribution range 生態學

; 淡水 底中水層性. 熱帶

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

Africa: Upper White Nile basin in South Sudan (Ref. 28714, 57474) and Ethiopia (Ref. 58460).
非洲: 白色尼羅河上游。

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 2.9 cm SL 雄魚/尚未辨別雌雄; (Ref. 81276)

簡短描述 檢索表 | 型態特徵 | 形態測量圖

背的軟條 (總數) : 9 - 10; 臀鰭軟條: 9 - 10; 脊椎骨: 41 - 45. Diagnosis: pelvic fin origin well in front of anterior base of dorsal fin; preorbital stripe absent; caudal peduncle depth 10.1-12.9% of SL; dorsal precaudal fin fold more pronounced, reaching base of dorsal fin; 6-7 pectoral fin rays; 6 (rarely 7) pelvic fin rays; 3 (rarely 2) supernumerary rays in anal fin; 7 dorsal fin pterygiophores; 8+8 principal caudal fin rays; cephalic lateral line canals and supraorbital bone absent; parasphenoid slender, without foramina for internal carotid arteries; neural spine of 2nd vertebra long and slender, at least 2 times length of its vertebral centrum and similar in shape to subsequent neural spines (Ref. 57474).
體高 6.5-8.4 x SL。 頭部 4.5-5.7 x SL。 圓的突出吻。 皮膚的摺層在與之下上方幾乎一半的尾柄。 氣鰾連接到食道了。 發展良好的腦具有大部分的復原的關於皮膚的多骨骨骼的塊。 二個亞種: 尼羅河-類型, C. n。 nilotica 與 Sudano-Sahalien 的類型 C. n。 occidentalis Daget,1954. 微白色的身體, 淡黃色的背面有小的褐色斑點。

生物學特性     字彙 (例如 epibenthic)


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

非洲: 白色尼羅河上游。

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

Moritz, T., R. Britz and K.E. Linsenmair, 2006. Cromeria nilotica and C. occidentalis, two valid species of the African freshwater fish family Kneriidae (Teleostei: Gonorhynchiformes). Ichthyol. Explor. Freshwat. 17(1):65-72. (Ref. 57474)

IUCN 瀕危狀態 (Ref. 130435: Version 2024-1)

  無危 (LC) ; Date assessed: 01 May 2009

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

  無害處的





人類使用

FAO - Publication: search | FishSource |

更多資訊

Trophic ecology
食物相
食性組成
食物消耗量
Food rations
捕食者
Ecology
生態學
Population dynamics
成長參數
Max. ages / sizes
Length-weight rel.
Length-length rel.
長度-頻率
Mass conversion
入添量
豐度
Life cycle
繁殖
成熟度
Maturity/Gills rel.
孕卵數
產卵場
Spawning aggregations

卵發育
仔魚
稚魚動力學
Distribution
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簡介
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鰓區
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耗氧量
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Toxicity (LC50s)
Genetics
遺傳學
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水產養殖描述
品種
Ciguatera cases
Stamps, coins, misc.
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Taxonomy
俗名
同種異名
型態特徵
形態測量圖
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References
參考文獻

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網路資源

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | 檢查 FishWatcher | CISTI | Catalog of Fishes: , | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: 基因組, 核甘 | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | 樹狀分類階層 | Wikipedia: , 搜尋 | World Records Freshwater Fishing | Zoobank | 動物學的記錄

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.7500   [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).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).