Netherlands country information

Common names: Harnasmannetje
Occurrence: native
Salinity: marine
Abundance: common (usually seen) | Ref: Nijssen, H. and S.J. de Groot, 1974
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments:
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/nl.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Russell, F.S., 1976
National Database:

Common names from other countries

Souris de mer, Armed bullhead, Pogge, ... more

Classification / Names Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | ITIS | CoL | WoRMS | Cloffa

> Perciformes/Cottoidei (Sculpins) > Agonidae (Poachers) > Agoninae
Etymology: Agonus: Greek, a = without + Greek, gonos = race, generation (Ref. 45335).
More on author: Linnaeus.

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

marino demersale; distribuzione batimetrica 0 - 270 m (Ref. 58496). Temperate; 4°C - 8°C; 77°N - 43°N, 28°W - 46°E

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri

Northeast Atlantic: English Channel to Finmarken and Murman coasts and White Sea, also the Shetlands, the Faroes and southern and southwestern coasts of Iceland; southern part of Baltic.

Size / Peso / Age

Maturity: L_m ? range ? - ? cm
Max length : 21.0 cm TL maschio/sesso non determinato; (Ref. 4700); common length : 14.0 cm TL maschio/sesso non determinato; (Ref. 4700); Età massima riportata: 3.00 anni (Ref. 722)

Short description Chiavi di identificazione | Morfologia | Morfometria

Spine dorsali (totale) : 5 - 6; Raggi dorsali molli (totale) : 6 - 8; Raggi anali molli: 5 - 7. Unpaired breast row of plates absent, but paired plate rows cover whole breast. Snout with a pair of strong spiny hooks; numerous barbels on branchiostegal membranes. Dorsal plates 31-34 (Ref. 232). Spiny and soft dorsal fins almost fused. No spines on the hind part of the head (Ref. 35388).

Inhabits inshore waters, deeper waters in winter in Skaggerak, preferring sandy bottoms, rarely with stones. Maximum depth reported at 270 m (Ref. 28197). Temp. range: 4.0-8.0 °C. Feeds on bottom crustaceans and polychaetes. Matures after about 1 year; a few spawning in the second year (Ref. 722). The eggs are laid in seaweed (Ref. 9900). Spawns in February - April, female laying 2,500-3,000 yellow eggs with a diameter of 2 mm. Period of development is very long and 6-8 mm long pelagic larvae hatch after 10-11 months (Ref. 35388).

Life cycle and mating behavior Maturities | Riproduzione | Spawnings | Egg(s) | Fecundities | Larve

Main reference Upload your references | Bibliografia | Coordinatore | Collaboratori

Ehrenbaum, E., 1936. Naturgeschichte und wirtschaftliche Bedeutung der Seefische Nordeuropas. Handb. Seefisch. Nordeurop. 2:337 p. (Ref. 40)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 18 October 2013

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Pesca: di nessun interesse; Acquario: Acquari pubblici

FAO(Publication : search) | FishSource | Sea Around Us

Informazioni ulteriori

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Fonti Internet

Estimates based on models

Preferred temperature (Ref. 115969): 7 - 11.7, mean 9.2 (based on 442 cells).

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

Bayesian length-weight: a=0.01023 (0.00397 - 0.02640), b=2.99 (2.77 - 3.21), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.4 ±0.3 se; based on diet studies.

Resilienza (Ref. 120179): Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (K=0.47; tm=1-4; tmax=3; Fec=2,400).

Fishing Vulnerability (Ref. 59153): Low to moderate vulnerability (26 of 100).

Agonus cataphractus (Linnaeus, 1758)