This website uses cookies to enhance your browsing experience and ensure the functionality of our site. For more detailed information about the types of cookies we use and how we protect your privacy, please visit our Privacy Information page.
×
Cookie Settings
This website uses different types of cookies to enhance your experience. Please select your preferences below:
Performance
These cookies help us understand how visitors interact with our website by collecting and reporting information anonymously. For example, we use Google Analytics to generate web statistics, which helps us improve our website's performance and user experience. These cookies may track information such as the pages visited, time spent on the site, and any errors encountered.
Teleostei > Characiformes (Characins) 脂鯉目 (Characins) > Alestidae (African tetras) Alestidae (African tetras)
Etymology: Petersius:In naming Petersius Hilgendorf (1894) honored the naturalist and curator Wilhelm C.H. Peters of the Museum für Naturkunde, Berlin (Ref. 127953). Eponymy: Wilhelm Karl Hartwig Peters (1815–1883) was a German zoologist and traveller who made some very important collections in Mozambique. [...] (Ref. 128868), visit book page. More on author: Hilgendorf.
背棘 (總數) : 0; 背的軟條 (總數) : 10; 臀棘: 0; 臀鰭軟條: 21 - 23; 脊椎骨: 36 - 37. Diagnosis: This species is diagnosed by a unique cuspidation pattern of the inner row premaxillary dentition with the cusps of the cutting-edge oriented buccally, vs. lingually oriented in all other alestids, and the possession of a distinctively shaped margin of the supraoccipital with a steep anterodorsal convexity at the junction of the parietals followed by a dorsomedial concavity on the surface of the supraoccipital (Ref. 127953). Body shape (shape guide): fusiform / normal. 身體高度 3.1 倍標準的長度.(參考文獻 42032) 頭長 3.75 倍標準的長度.(參考文獻 42032) 下頜伸出。 (參考文獻 42032) 腔壁的囟門不存在。 (參考文獻 42032) 沒有內在又下方的齒.(參考文獻 42032) 犬齒數字: 上頜 3 的外部列,上頜 4-6 的內部列, 下頜 4-7 的外部列.(參考文獻 42032) 垂直的, 不絲狀的背鰭與尾鰭鰭.(參考文獻 42032) 在尾鰭的中央鰭條上延伸的尾梗上的大的黑色斑點.(參考文獻 42032)
Occurs in sandy river courses and floodplain lakes with bushy shorelines with forested or grassy margins (Ref. 127953).
Melo, B.F. and M.L.J. Stiassny, 2022. Systematic review and cranial osteology of Petersius with redescription of P. conserialis (Teleostei: Alestidae) from the Rufiji and Ruvu rivers of Tanzania. Am. Mus. Nov. 3992:1-16. (Ref. 127953)
系統發育多樣性指數 (參考文獻 82804): PD50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01072 (0.00491 - 0.02339), b=3.02 (2.84 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
營養階層 (參考文獻 69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
回復力 (參考文獻 120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
釣魚的脆弱性 (Ref. 59153): Low vulnerability (10 of 100). 🛈