Permanently attached: Anglerfish fuse bodies with partners while mating
Shortpedia
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The Anglerfish that are found in deep-sea, fuse bodies with their partners when they mate. The smaller male anglerfish becomes permanently attached to the relatively gigantic female. This results in their tissue fusing together and the two animals establishing a common blood circulation system. The male anglerfish becomes entirely dependent on the female for nutrients. This process is called 'sexual parasitism.'
