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Anglerfish (Lophius spp) in Nordic waters

image of Anglerfish (Lophius spp) in Nordic waters

The demand for anglerfish for human consumption has increased in the last couple of decades because of the delicate consistency of its meat. Accordingly, the fishing pressure has increased considerably in all Nordic fishing regions. Relatively little has, however, hitherto been known about anglerfish biology and ecology. Assessment and management of Nordic anglerfish stocks is difficult to conduct due to the paucity of fisheries and biological data. Answers to questions regarding the spawning behaviour, migratory behaviour and juvenile drift, as well as more knowledge about growth, sexual maturation, diet and natural mortality, would thus form crucial contributions to present and future management of Nordic anglerfish stocks. This report presents a review of the status of current knowledge and research on the biology, ecology, fisheries and stock management of anglerfish in Nordic and European countries, including results and publications from a three-year Nordic cooperative anglerfish research project (2002-2004). Preliminary attempts were made at estimating current levels of fishing mortality in the Nordic regions, and the yield and spawning stock per anglerfish recruit. Recommendations on future research are also given.

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Verification of anglerfish (Lophius piscatorius) age estimation through comparison of length modes of age read fish (illicia) to length modes of big year-classes appearing in the Icelandic stock

In order to validate age readings of white anglerfish (Lophius piscatorius) length modes of large year-classes that have characterised the Icelandic stock since 1998 were compared with length modes from age read samples. The length modes of these year-classes can be followed as peaks in the length distributions for several years and thus their actual age assumed accurately. The results show that there is a fairly good agreement between the non age-read length modes and the corresponding length modes established through age readings (of the illicia) indicating that the age readings are based on true interpretation of year-rings.

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