Study suggests fish can experience 'emotional fever'

(Phys.org)—A small team of researchers from the U.K. and Spain has found via lab study that at least one type of fish is capable of experiencing 'emotional fever,' which suggests it may qualify as a sentient being. In their paper published in the journal Proceedings of the Royal Society B, the team describes their experiments with stressing zebra fish, how the fish reacted, and why they believe it should now be added to the list of organisms labeled as sentient beings.

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