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Fish individual data collection NTNU University Museum

Citation

Davidsen J G, Daverdin M, Friis M E L (2026). Fish individual data collection NTNU University Museum. Norwegian University of Science and Technology. Occurrence dataset https://doi.org/10.15468/2vkt9k accessed via GBIF.org on 2026-06-04.

Description

NTNU University Museum's Fish individual data collection comprise of measurements and sampling results of fish on an individual level, with the oldest registrations from 1938. 

This dataset comprise a variety of freshwater species, as well as European eel and European flounder. Atlantic salmon, brown trout and Arctic char account for the majority of registrations.

The collection contains specimen sampled in Norway, on Bear Island and on Greenland. 

Each occurrance might be registered with taxon, sample time, sampler and a description of material or facts of length, mass, age, stomach content, maturity, parasite load, muscle color and estimation of growth. 

Sampling Description

Study Extent

Data in this collection is gathered from monitoring and research projects using a variety of sampling methods from a variety of locations and environments. Most of the samples originates from Norway, some are from Bear island and south and south-west Greenland.

Sampling

The most frequently used methods are gillnets, electric stunning devices and downstream migrating fish trap ("smolt trap"). The collection also include individuals caught by fishing rod, in upstream migrating fish traps, in stationary traps and fish released from hatcheries. The dataset also include detections of individuals with implanted acoustic transmitters on acoustic receivers, as well as attached radio transmitters on radio receivers.

Method steps

  1. Gillnets Electric stunning decies Downstream migrating fish traps Fishing rod Upstream migrating fish trap Stationary traps Hatchery released fish Acoustic receivers Radio receivers

Taxonomic Coverages

Majority of data on specimen in this collection originate from research and monitoring in freshwater, mainly focusing on Atlantic salmon, brown trout and Arctic char. Both freshwater resident and anadromous individuals of salmonids are included. The collection also include data on marine species venturing into freshwater.
  1. Chordata
    rank: phylum
  2. Anguilliformes
    rank: order
  3. Anguillidae
    rank: family
  4. Cypriniformes
    rank: order
  5. Gnathostomata Osteichthyes
    rank: class
  6. Pleuronectiformes
    rank: order
  7. Salmonidae
    rank: family
  8. Pleuronectidae
    rank: family
  9. Salmoniformes
    rank: order
  10. Animalia
    rank: kingdom
  11. Cyprinidae
    rank: family
  12. Gasterosteiformes
    rank: order
  13. Gasterosteidae
    rank: family

Geographic Coverages

Collection covers specimen sampled in Norway, on Bear Island and on south and south-west Greenland.

Bibliographic Citations

Contacts

Jan Grimsrud Davidsen
originator
NTNU University Museum
Trondheim
NO
email: jan.davidsen@ntnu.no
Marc Daverdin
originator
position: Staff Engineer
NTNU University Museum
Trondheim
NO
email: marc.daverdin@ntnu.no
Mikkel Emil Lange Friis
metadata author
NTNU University Museum
Trondheim
NO
email: mikkel.e.l.friis@ntnu.no
Jan Grimsrud Davidsen
administrative point of contact
position: Associate Professor
NTNU University Museum
Trondheim
NO
email: jan.davidsen@ntnu.no
Marc Daverdin
administrative point of contact
position: Staff Engineer
NTNU University Museum
Trondheim
NO
email: marc.daverdin@ntnu.no
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