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Which animal species has the biggest size differential between male and female?

Question #150273. Asked by psnz.
Last updated Dec 07 2023.
Originally posted Dec 07 2023 9:01 PM.

BigTriviaDawg

Answer has 3 votes

Currently Best Answer

BigTriviaDawg

7 year member
1007 replies avatar

Answer has 3 votes.

Currently voted the best answer.

The northern giant seadevil has a huge difference between the male and female fish. The female is 500,000 times heavier than the male! That is hard to comprehend. See the image below for a visual comparison.

Although free-swimming when young, these males effectively become parasites, attaching themselves to the females, feeding off the nutrients in her blood and ultimately being used only to supply sperm for reproduction.

https://images.app.goo.gl/JEDzcrzYHksMRWDH6

https://www.guinnessworldrecords.com/world-records/84475-largest-sexual-dimorphism-in-the-same-species

Response last updated by BigTriviaDawg on Dec 07 2023.
Dec 07 2023, 9:05 PM

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Which animal species has the biggest size differential between male and female?

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