Admin Are dolphins oviparous?
Dolphins, even though resemble fishes, are mammals but are not oviparous. They are viviparous.
Is Whale viviparous?
Whales and bats are viviparous animals.
Are fish oviparous or viviparous?
Overview. Most fish are oviparous, although ovoviparity and viviparity are also well represented. Parental care may occur in oviparous fishes but is quite variable, with many fishes scattering eggs and displaying no care whatsoever for offspring.
Is fish oviparous viviparous or Ovoviviparous?
Approximately 90% of bony and 43% of cartilaginous fish are oviparous (See Types of Fish). In oviparous fish, females spawn eggs into the water column, which are then fertilized by males. For most oviparous fish, the eggs take less energy to produce so the females release large quantities of eggs.
Are turtles viviparous?
Viviparity has evolved at least 100 times within reptiles (Shine 1985). Viviparous species are, however, distributed unevenly at all taxonomic levels. Turtles, archosaurs (crocodilians and birds), and sphenodontidans are entirely oviparous, whereas viviparity has evolved numerous times among lizards and snakes.