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This section highlights the differences between cartilaginous fish and bony fish (Box A1.1).

Table A1.4 Ovarian types in fish.

Source: Stoskopf (1993). © 1993, Elsevier.

	Definition	Examples
Cystovarian	Ova released into oviduct	Most bony fish
Gymnovarian	Ova released into coelom, then ostium, then oviduct	Lungfish (Dipnoi), sturgeon (Acipenseridae), bowfin (Amia calva), cartilaginous fish
Semicystovarian (secondary gymnovarian)	Ova released into coelom, then through urogenital pore	Salmonids (Salmonidae)

Table A1.5 Example of reproductive modalities in bony fish.

Source: Lodé (2012). © John Wiley & Sons.

	Definition	Examples
Ovuliparity	Ova expelled externally, then fertilized	Salmonids (Salmonidae), sticklebacks (Gasterosteidae)
Oviparous	Internal fertilization, then ova expelled externally	Most teleost species
Ovoviviparous	Internal fertilization, retention of ova in body for embryo development, live births	Some rockfish (Sebastidae)
Viviparous (histotrophic or lecithotrophic)	Embryo development in body, nutrients provided by body: glandular, oophagy, adelphophagy	Guppies, mollies (Poecilidae)
Viviparous (hemotrophic or matrotrophic)	Embryo development in body, nutrients provided by body: pseudoplacentation or placentation	Four‐eyed fish (Anablepidae), cusk‐eels (Ophidiidae), some blennies (Clinidae), some rockfish (Sebastidae), splitfins (Goodeidae), halfbeaks (Hemiramphidae)