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Characiformes (Characins) >
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.
Lingkungan: lingkungan / zona iklim / kisaran kedalaman / jangkauan distribusi
Ekologi
; air tawar pelagis, permukaan. Tropical; 22°C - 26°C (Ref. 2059)
Africa: endemic to lowland regions of the Ruvu and Rufiji rivers in the Pwani Region of eastern Tanzania (Ref. 4967, 127953).
Ukuran / Berat / umur
Kematangan: Lm ?  range ? - ? cm
Max length : 14.5 cm TL jantan/; (Ref. 42032)
deskripsi pendek
Kunci identifiaksi (pengenalan) | Morfologi | Morfometrik
Duri punggung (Keseluruhan (total)) : 0; duri punggung lunak (Keseluruhan (total)) : 10; Duri dubur: 0; Sirip dubur lunak: 21 - 23; vertebrata, bertulang belakang: 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.
Occurs in sandy river courses and floodplain lakes with bushy shorelines with forested or grassy margins (Ref. 127953).
Siklus hidup dan perilaku kawin
Kematangan | Reproduksi, perkembang biakan | Pemijahan | telur-telur | Fekunditas | Larva
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)
Status IUCN Red List (Ref. 130435: Version 2025-2 (Global))
ancaman kepada manusia
Harmless
penggunaan manusia
Alat, peralatan
laporan khas
muat turun XML
Sumber internet
Estimasi berdasarkan model
Indeks keanekaragaman filogenetik (Acuan 82804) |
PD50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01072 (0.00489 - 0.02350), b=3.02 (2.84 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Tingkat Trofik (Acuan 69278) |
3.1 ±0.4 se; based on size and trophs of closest relatives |
Daya lenting (Acuan 120179) |
Tinggi, Waktu penggandaan populasi minimum kurang dari 15 bulan (Preliminary K or Fecundity.). |
Kerentanan Penangkapan Ikan (Ref. 59153) |
Low vulnerability (14 of 100). 🛈 |