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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 Ökologie

; süßwasser pelagisch. Tropical; 22°C - 26°C (Ref. 2059)

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Africa: endemic to lowland regions of the Ruvu and Rufiji rivers in the Pwani Region of eastern Tanzania (Ref. 4967, 127953).

Size / Gewicht / Alter

Maturity: L_m ? range ? - ? cm
Max length : 14.5 cm TL Männchen/unbestimmt; (Ref. 42032)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

Rückenflossenstacheln (insgesamt) : 0; Rückenflossenweichstrahlen (insgesamt) : 10; Afterflossenstacheln: 0; Afterflossenweichstrahlen: 21 - 23; Wirbelzahl: 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 | Fortpflanzung | Spawnings | Egg(s) | Fecundities | Larven

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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 Rote Liste Status (Ref. 130435)

nicht bedroht (LC) ; Date assessed: 31 January 2006

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Harmless

Nutzung durch Menschen

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01148 (0.00528 - 0.02495), b=3.00 (2.82 - 3.18), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.1 ±0.3 se; based on size and trophs of closest relatives

Widerstandsfähigkeit (Ref. 120179): hoch, Verdopplung der Population dauert weniger als 15 Monate. (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

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Petersius conserialis Hilgendorf, 1894