Parauchenoglanis ernstswartzi, Ernstswartz’s grunter : fisheries

Parauchenoglanis ernstswartzi Sithole, Vreven, Bragança, Musschoot & Chakona, 2024

Ernstswartz’s grunter
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Image of Parauchenoglanis ernstswartzi (Ernstswartz’s grunter)
No image available for this species;
drawing shows typical species in Auchenoglanididae.

Klassificering / Namn Populärnamn | synonymer | Catalog of Fishes(Släkte, Arter) | ITIS | CoL | WoRMS | Cloffa

> Siluriformes (Catfishes) > Auchenoglanididae (Flatnose catfishes)
Etymology: Parauchenoglanis: Greek, para = near + Greek, auchen = neck + Greek, glanis = a fish that can eat the bait without touching the hook; a cat fish (Ref. 45335)ernstswartzi: Named after Dr. Ernst Swartz, who collected specimens used in the description of six new species in this study. This dedication is in recognition of his pioneering and extensive exploration of the Kwanza and adjacent river systems, including the upper Kasai sub-basin.

Miljö: miljö / Klimatzon / djupintervall / distributionsområde Ekologi

; sötvatten bentopelagisk. Tropical

Utbredning Territorier | FAO områden | Ekosystem | Förekomster | Prickkarta | Utplanteringar | Faunafri

Africa: Angola.

Storlek / Vikt / Ålder

Könsmognad: Lm ?  range ? - ? cm
Max length : 10.6 cm SL hane/ej könsbestämd; (Ref. 132425)

Kort beskrivning Bestämningsnycklar | Morfologi | Morfometri

Mjukstrålar i ryggfenan (totalt) : 7; Mjukstrålar i analfenan: 9; Ryggkotor: 32. This species is distinguished from its congeners ahli, altipinnis, balayi, buettikoferi, longiceps, monkei, pantherinus, punctatus, zebratus by having the eyes situated dorsally, i.e. high on the head towards its upper edge, and round snout profile (vs. eyes situated dorsally and bluntly triangular snout profile); differs from stiassnyae with truncated caudal fin (vs. rounded), spotted fins (vs. unspotted pectoral, pelvic and anal fin), vertical rows of blotches interspaced by reticulated pattern (vs. irregularly scattered large blotches and absence of reticulated pattern on the flank), in addition to shorter barbels, with external mandibular barbel not reaching the tip of the pectoral-fin spine (vs. barbels long, with external mandibular barbel reaching beyond the tip of the pectoral-fin spine); differs from all other species of the P. ngamensis species group by its round snout profile (vs. bluntly triangular in ngamensis, lueleensis, patersoni, dolichorhinus, poikilos, chiumbeensis, luendaensis or partly round in megalasma.), eyes situated dorsally (vs. eyes situated dorsolaterally in ngamensis, lueleensis, patersoni, dolichorhinus, poikilos, chiumbeensis, luendaensis, megalasma), black spots at the base of the pectoral fin (vs. absent in ngamensis, lueleensis, patersoni, dolichorhinus, poikilos, chiumbeensis, luendaensis, megalasma), black blotches (eye size) forming six to seven vertical rows extending onto adipose fin (vs. five to seven vertical rows of black spots or blotches not extending onto adipose fin in ngamensis, lueleensis, patersoni, dolichorhinus, poikilos, chiumbeensis, luendaensis, megalasma), and vermiculated pattern on the background (vs. spots on the background in ngamensis, lueleensis, poikilos or no background spots in patersoni, dolichorhinus, chiumbeensis, luendaensis; differs further from ngamensis, lueleensis, patersoni, dolichorhinus, chiumbeensis, luendaensis by the heavily spotted barbels (vs. unspotted); differs further distinguished from dolichorhinus by wider interpectoral distance, 19.8%-20.6% SL (vs. narrow, 12.4%-18.2% SL); differs further from dolichorhinus, lueleensis, poikilos by deeper body depth, 18.2%-19.9% SL (vs. shallow, 11.6%-14.0% SL in dolichorhinus, 15.0%-17.4% SL in lueleensis, and 16.0%-16.2% SL in poikilos) (Ref. 132425).
Cross section: oval.

Biologi     Ordlista (t.ex. epibenthic)

Livscykel och parningsbeteende Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver

Huvudreferens Ladda upp dina referenser | referenser | Koordinator | Medarbetare

Sithole, Y., E.J.W.M.N. Vreven, P.H.N. Bragança, T. Musschoot and A. Chakona, 2024. Nine in one: integrative taxonomic evidence of hidden species diversity in the widespread Zambezi grunter, Parauchenoglanis ngamensis (Siluriformes: Auchenoglanididae), from southern and south-central Africa. Zool. J. Linn. Soc. 202:1-33. (Ref. 132425)

Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))


CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Hot mot människor

  Harmless





Mänskliga användningsområden

Fiskeri: mindre kommeriell
FAO - Publication: search | FishSource |

Ytterligare information

Trofisk ekologi
Livsmedelsartiklar (preys)
Födosammansättning
Födointag
Matransoner
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Ekologi
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Populationsdynamik
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Frimärken, mynt, diverse.
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Internet-källor

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: Släkte, Arter | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: Go, sök | World Records Freshwater Fishing | Zoobank | Zoologiskt register

Uppskattningar baserade på modeller

Index för fylogenetisk mångfald
(Ref. 82804)
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.00525 (0.00219 - 0.01260), b=3.09 (2.88 - 3.30), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trofisk nivå
(Ref. 69278)
3.5   ±0.5 se; based on size and trophs of closest relatives
Resiliens
(Ref. 120179)
Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.).
Sårbarhet i fisket
(Ref. 59153)
Low vulnerability (13 of 100). 🛈