Yellowfin tuna are large fish that are found in tropical and subtropical waters around the world. They typically school under objects such as boats or patches of driftwood for protection from predators. Schooling under these structures also provides yellowfin tuna with easy access to a food source, such as smaller herbivorous fish that may be searching for food around the structures.Which trophic level in an energy pyramid do yellowfin tuna fill?
Herbivorous fish eat producers such as algae, so they are primary consumers. Yellowfin tuna eat these smaller fish, placing the tuna one level higher as secondary consumers. Therefore, the correct choice is secondary consumer.
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