A new species of deep-sea ghost shark, identified as *Rhinochimaera costaricana*, has been discovered off the coast of Costa Rica. This discovery was made using a combination of traditional anatomical measurements and modern genetic analysis, a method known as integrative taxonomy. The new species is distinguished by subtle anatomical differences, such as a shorter snout and a larger dorsal fin spine, along with significant genetic divergence in its COI gene. AI
RANK_REASON Discovery of a new species using integrative taxonomy. [lever_c_demoted from research: ic=1 ai=0.1]
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