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♦ ¹Lawson, E.O. and A.U. Olagundoye, 2011. Growth patterns, diet composition and sex ratios in giant african threadfin, Polydactylus quadrifilis from ologe lagoon, Lagos, Nigeria. Int. J. Agric. Biol., 13: 559–564
♦ ²Predator-Prey Relationships and Food Sources of the Skagerrak Deep-Water Fish Assemblage, O. A. Bergstad, Å. D. Wik and Ø. Hildre, J. Northw. Atl. Fish. Sci., Vol. 31, 2003, pp. 165-180