Male seahorses, fishes that belong to the Syngnathidae family, show a distinctive reproductive strategy in which males carry developing embryos in a brood pouch. Their most distinctive feature is the brood pouch on the ventral side of the male fish, into which the female fish transfers her eggs.

Source: [Phys.org](https://phys.org/news/2026-10-male-seahorse-pouch-proteins-toxic.html)

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