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.
Algae are fundamental to the marine food web, because consumers depend upon these photosynthetic organisms for energy in some way. For example, primary consumers, such as certain crustaceans, are herbivores that feed directly on algae to obtain energy. Herring are an example of secondary consumers, which are carnivores that get energy by eating primary consumers. Larger carnivores, such as salmon, eat herring.