Similar title to Skjaeraasen, J.E., Meager, J.J., & Heino, M. ORCID: https://orcid.org/0000-0003-2928-3940 (2012). Secondary sexual characteristics in codfishes (Gadidae) in relation to sound production, habitat use and social behaviour. Marine Biology Research 8 (3) 201-209. 10.1080/17451000.2011.637562.