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Fish Reproduction - Anatomy & Physiology (view source)
Revision as of 13:39, 29 July 2008
, 13:39, 29 July 2008→Oviparity
* 97% of fish
* 97% of fish
* Mostly [[external fertilisation]], with the male and female fish shedding their gametes into the surrounding water.
* Mostly '''external fertilisation''', with the male and female fish shedding their gametes into the surrounding water.
* A few oviparous fishes practise [[Fertilisation%2C_Implantation_and_Early_Embryonic_Development_-Fertilisation-_Anatomy_%26_Physiology|'''internal fertilisation''']], with the male using an intromittent organ to deliver sperm into the genital opening of the female.
* A few oviparous fishes practise [[Fertilisation%2C_Implantation_and_Early_Embryonic_Development_-Fertilisation-_Anatomy_%26_Physiology|'''internal fertilisation''']], with the male using an intromittent organ to deliver sperm into the genital opening of the female.
** Species that pracitce [[Fertilisation%2C_Implantation_and_Early_Embryonic_Development_-Fertilisation-_Anatomy_%26_Physiology|internal fertilization]] include oviparous sharks, such as the horn shark, and oviparous rays, such as skates.
** Species that pracitce [[Fertilisation%2C_Implantation_and_Early_Embryonic_Development_-Fertilisation-_Anatomy_%26_Physiology|internal fertilization]] include oviparous sharks, such as the horn shark, and oviparous rays, such as skates.