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Fish Intelligence

Fish Appear to Recognize Themselves in the Mirror. The cleaner wrasse fish (Labroides dimidiatus), responds to its reflection and attempts to remove marks on its body during the mirror test -- a method considered the gold standard for determining self-awareness in animals. The finding suggests that fish might possess far higher cognitive powers than previously thought, and ignites a high-stakes debate over how we assess the intelligence of animals that are so unlike ourselves. Source 2k.

Intelligence Fish

Is that unique to that breed of fish or can most fishes recognize themselves with the mirror test?