Lino Costa, J., Raposo de Almeida, P. and Costa, M. J. (2003) “A morphometric and meristic investigation of Lusitanian toadfish Halobatrachus didactylus (Bloch and Schneider, 1801): evidence of population fragmentation on Portuguese coast”, Scientia Marina, 67(2), pp. 219–231. doi: 10.3989/scimar.2003.67n2219.