1. Introduction to fish first and secondary metamorphoses / Karine Rousseau and Sylvie Dufour -- 2. Lamprey metamorphosis / John H. Youson and Richard G. Manzon -- 3. Metamorphosis of elopomorphs / Keisuke Yamano -- 4. Metamorphosis of flatfish (Pleuronectiformes) / Yasuo Inui and Satoshi Miwa -- 5. Metamorphosis in an amphidromous goby, Sicyopterus lagocephalus (Pallas 1767) (Teleostei: Gobioidei: Sicydiinae) : a true metamorphosis? / Philippe Keith. [et al.] -- 6. Salmonid smoltification / Karine Rousseau. [et al.] -- 7. Eel secondary metamorphosis : silvering / Karine Rousseau, Salima Aroua and Sylvie Dufour.