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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).
More on author: Hilgendorf.
Environment: milieu / climate zone / depth range / distribution range
पारिस्थितिकी
; स्वच्छ जल, अलवण जल पिलाजिक. 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).
आकार / वज़न / Age
Maturity: Lm ?  range ? - ? cm
Max length : 14.5 cm TL पुल्लिंग / अलिंग; (Ref. 42032)
पृष्ठीय रीढ़ (सम्पूर्ण) : 0; पृष्ठीय सौफट रेज़ (सम्पूर्ण) : 10; गुदा कांटा: 0; ऐनल सौफट रेज़: 21 - 23; जानवरों की रीड़ का जोड़: 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).
Occurs in sandy river courses and floodplain lakes with bushy shorelines with forested or grassy margins (Ref. 127953).
Life cycle and mating behavior
Maturities | पुनरुत्पत्ति | Spawnings | Egg(s) | Fecundities | लार्वा
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)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
साधन
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