In a pan on medium heat, heat 1 teaspoon of coconut oil and fry the fish mix for a few minutes, until the fish is done. This should take no more than 5 minutes, given the thin slices of the fish.
Remove the fish from the heat and add it to the drained plantains. Mash the plantain and fish mix together.
Add the second teaspoon of coconut oil to the pan, form the plantain and fish mash into balls, and fry until golden brown.