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Psammogobius knysnaensis Smith, 1935

Knysna sandgoby
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Image of Psammogobius knysnaensis (Knysna sandgoby)
Psammogobius knysnaensis
Picture by Koch, R.J.


South Africa country information

Common names: Knysna sandgoby, Knysna-sanddikkop
Occurrence: native
Salinity: brackish
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Ranges from Port Nolloth to Natal. Also Ref. 4343, 92840, 11344.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/sf.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Hoese, D.F., 1986
National Database:

Common names from other countries

Classification / Names Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa

> Gobiiformes (Gobies) > Gobiidae (Gobies) > Gobiinae
Etymology: Psammogobius: Greek, psammos = sand + Latin, gobius = gudgeon (Ref. 45335).
  More on author: Smith.

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

; saumâtre démersal.   Subtropical

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

Southeast Atlantic and Western Indian Ocean: South Africa.

Length at first maturity / Taille / Poids / Âge

Maturity: Lm 3.0  range ? - ? cm
Max length : 7.5 cm TL mâle / non sexé; (Ref. 11344)

Description synthétique Morphologie | Morphométrie

Épines dorsales (Total): 7; Rayons mous dorsaux (Total): 9-10; Épines anales 1; Rayons mous anaux: 9 - 11. Body grey to brown in color, with white and brown spots on back; thin white bars on side; 3-6 elongate dark brown spots on midside; males with black spot on rear of 1st dorsal fin (Ref. 2798).

Biologie     Glossaire (ex. epibenthic)

An estuary sand dweller occurring in tidal parts of rivers (Ref. 4343).

Life cycle and mating behavior Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

Référence principale Upload your references | Références | Coordinateur | Collaborateurs

Maugé, L.A., 1986. Gobiidae. p. 358-388. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels; MRAC, Tervuren; and ORSTOM, Paris. Vol. 2. (Ref. 4343)

Statut dans la liste rouge de l'IUCN (Ref. 130435)

  Préoccupation mineure (LC) ; Date assessed: 20 June 2017

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

  Harmless




Utilisations par l'homme

FAO(Publication : search) | FishSource |

Plus d'informations

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Écologie
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Consommation alimentaire
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Noms communs
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Métabolisme
Prédateurs
Écotoxicologie
Reproduction
Maturité
Frai
Fécondité
Œufs
Développement de l'œuf
Taille/Âge
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Longueur-poids
Longueur-longueur
Fréquences de longueurs
Morphométrie
Morphologie
Larves
Dynamique des populations larvaires
Recrutement
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Références
Aquaculture
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Sources Internet

Aquatic Commons | BHL | Cloffa | Websites from users | FishWatcher | CISTI | Catalog of Fishes(Genre, Espèce) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(génôme, nucléotide) | GloBI | GOBASE | | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Arbre de Vie | Wikipedia(aller à, chercher) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.6250   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01175 (0.00653 - 0.02113), b=3.06 (2.90 - 3.22), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Niveau trophique (Ref. 69278):  3.3   ±0.3 se; based on diet studies.
Résilience (Ref. 120179):  Haut, temps minimum de doublement de population inférieur à 15 mois (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).