Changes

* 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 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 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.

**  In these cases, the male is equipped with a pair of modified pelvic fins known as claspers.

**  In these cases, the male is equipped with a pair of modified pelvic fins known as claspers.

* The newly-hatched young are called larvae.  

* The newly-hatched young are called larvae.