Potamothrissa whiteheadi, Whitehead's sawtooth pellonuline

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Potamothrissa whiteheadi Poll, 1974

Whitehead's sawtooth pellonuline
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Image of Potamothrissa whiteheadi (Whitehead\
Potamothrissa whiteheadi
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Classificatie / Names Populaire namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

> Clupeiformes (Herrings) > Clupeidae (Herrings, shads, sardines, menhadens) > Dorosomatinae
Etymology: Potamothrissa: Greek, potamos = river + Greek, thrissa, -es = shad (Ref. 45335).  More on author: Poll.

Environment: milieu / climate zone / depth range / distribution range Ecologie

; zoetwater pelagisch.   Tropical; 2°S - 5°S

Verspreiding Landen | FAO regio's | Ecosystems | Voorkomen | Point map | Introducties | Faunafri

Africa: Hombo River, tributary of Lowa River, and Lindi/Tshopo River, Congo River basin, in Democratic Republic of the Congo (Ref. 188, 28136, 93833, 122734).

Size / Gewicht / Leeftijd

Maturity: Lm ?  range ? - ? cm
Max length : 4.7 cm SL mannelijk/geslacht niet bekend; (Ref. 188)

Korte beschrijving Morfologie | Morfometrie

Dorsale stekels (totaal): 0; Dorsale zachte stralen (totaal): 14-15; Anale stekels 0; Anale zachte stralen: 19 - 22; Wervels: 42. Diagnosis: Body slender, its depth 22-25% of standard length; pre-pelvic scutes not strongly keeled, beginning under or behind base of last pectoral finray, 8-10 pre-pelvic and 6-9 post-pelvic scutes, belly rounded; snout bluntly rounded; lower jaw not projecting, exactly meeting tip of upper jaw when mouth closed, deepest at mid-point of jaw, with small saw-like teeth on each side; pre-maxillae with small teeth pointing downward; maxilla very slender, its blade over 3 times as long as deep, upper edge ridged, lower edge without denticulations; posterior supra-maxilla minute, virtually without anterior shaft; lower gillrakers 14-17; silver stripe along flank, narrower anteriorly (Ref. 188, 28136). The presence of small horny denticles on snout and edges of mouth on the skin of the maxillary is typical for this species (Ref. 188, 93833). It closely resembles Potamothrissa obtusirostris, which lacks dermal denticles on the snout and has more post-pelvic scutes, 9-12 vs. 6-9; Potamothrissa acutirostris has a pointed snout and more gillrakers, 16-18 vs. 14-17 (Ref. 188, 28136). Other pellonulines lack saw-like teeth at the sides of the lower jaw (Ref. 188).

Biologie     Verklarende woordenlijst (b.v. epibenthic)

It is a riverine species (Ref. 188).

Life cycle and mating behavior Geslachtsrijpheid | Voortplanting | Kuitschieten | Eieren | Fecundity | Larven

Voornaamste referentie Upload your references | Referenties | Coördinator | Medewerkers

Whitehead, P.J.P., 1985. FAO Species Catalogue. Vol. 7. Clupeoid fishes of the world (suborder Clupeoidei). An annotated and illustrated catalogue of the herrings, sardines, pilchards, sprats, shads, anchovies and wolf-herrings. FAO Fish. Synop. 125(7/1):1-303. Rome: FAO. (Ref. 188)

Status op de Rode Lijst van het IUCN (Ref. 123251)

  Onvoldoende gegevens (DD) ; Date assessed: 05 March 2018

CITES (Ref. 123416)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaarlijk voor mensen

  Harmless





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Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.6250   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00912 (0.00433 - 0.01920), b=3.03 (2.86 - 3.20), 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
Weerstandsvermogen (Ref. 120179):  Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.).
Kwetsbaarheid (Ref. 59153):  Low vulnerability (10 of 100) .