Information about the distribution of elasmobranch species throughout Portuguese waters has not been previously available except for limited data provided by IPIMAR research surveys (Figueiredo, (9,10).
During a survey of deep-sea fishes by the Portuguese Marine Research Institute (IPIMAR), one of the authors (Correia (11)) observed that Centroscymnus coelolepis was very rarely caught at depths shallower than 800 m.
Fishing operations were carried out onboard the IPIMAR
's research vessel Diplodus using the Portuguese small razor clam dredge (fishing gear design can be found in Gaspar et al.
(1) Department of Genetics and Biotechnology, Centre of Genetics and Biotechnology of the University of Tras-os-Montes and Alto Douro CGB/UTAD P-5000-911 Vila Real, Portugal; (2) IPIMAR/CRIPSul Avenida 5 de Outubro 8700-305 Olhao, Portugal; (3) IPIMAR
, Aquaculture Department, Avenida de Brasilia, 1449-006 Lisboa, Portugal