Documentation of the case of hyperostosis in the silver bream, Pagrus auratus(Forster, 1801) sampled from waters around New Zealand

Abstract

In this study, a case of hyperostosis was studied in teleost fish Pagrus auratus sampled from Bay of Plenty and the Northeastern coast of New Zealand. New characteristics of the hyperostosis (position and shape) were added to those previously given for the species Pagrus auratus. The hyperostosis was found in the neural spine of the sixth caudal vertebra and the haemal spine of the sixth, seventh, and eighth caudal vertebrae. The present study showed that the shape of hyperostosis in the silver bream could be irregular-spherical, spherical, elongated, pear-shaped, and elongated pear-shaped.