There is the example of the pacific coast samon. After swimming upriver from the ocean, the females makes "nests" in the gravel on the bottom of the river in calm waters and lay their eggs. Then the male samon fertilize them by releasing their spem directly into the water above the eggs.
Placental mammals reproduce externally. (not in pouches)
Externally.
All foxes are mammals and reproduce internally.
internally
internally
externally
External, like most fish.
Female goldfish have ovaries to produce eggs, and reproduce externally. Male goldfish have internal testes, and they also reproduce externally.
Dolphins reproduce internally and give live birth.
internal
All creatures reproduce.
Externally fertilize eggs.