Question

Yellowfin tuna, or Thunnus albacores, are large sport 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 foraging for food around the structures. Which trophic level does yellowfin tuna fill in a food chain?
producer
primary consumer
secondary consumer
tertiary consumer

Answer 1

Secondary consumer — yellowfin tuna eat smaller herbivorous fish (primary consumers), so they occupy the secondary consumer trophic level.