Add butter/olive oil combination. Add the fillets, without crowding. Increase heat to high and saute, shaking the pan from time to time, until the bottom of the fish is nicely browned, about 3 minutes. Turn and brown the other side. Remove fish to a plate and keep warm in the oven. Repeat with remaining fillets.
Copepods are considered to be primary consumers. They form an important link in the food chain. Their diet consists of small plant plankton.
This prominence coupled with their status as an important food source makes them vital to the ocean ecosystem. In short, alter zooplankton populations, and you risk throwing off the balance of the entire oceanic food web. Copepods are small crustacean zooplankton.