Acta Ichthyologica et Piscatoria 50(1): 121-125, doi: 10.3750/AIEP/02739
First data on the daily food consumption by Antarctic fish Trematomus hansoni (Actinopterygii: Perciformes: Nototheniidae) in captivity
expand article infoR. Gorniak, E. Riginella, N. Koschnick, V.V. Laptikhovsky

Corresponding author: R. Gorniak

© R. Gorniak, E. Riginella, N. Koschnick, V.V. Laptikhovsky.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation: Gorniak R, Riginella E, Koschnick N, Laptikhovsky V (2020) First data on the daily food consumption by Antarctic fish Trematomus hansoni (Actinopterygii: Perciformes: Nototheniidae) in captivity. Acta Ichthyologica et Piscatoria 50(1): 121-125. https://doi.org/10.3750/AIEP/02739
Open Access
Abstract
In this study, we present first observations on the feeding behaviour of an Antarctic notothenioid fish, the striped rockcod, Trematomus hansoni Boulenger, 1902. During 13 days of feeding experiment onboard RV Polarstern, the striped rockcod consumed an average of 1.0% BM · day–1 of Loligo reynaudii at the temperature around +1.0°C. The daily food ration of T. hansoni turned out to be lower than predicted by theoretical equations derived for fish living at higher temperatures but was similar to values observed in other Antarctic fish in captivity.
Keywords
daily ration, Nothotenioidei, captivity, temperature, Antarctica