Conus fuscoflavus is a species of sea snail, a marine gastropod mollusk in the family Conidae, the cone snails and their allies, endemic to the Cape Verdes. It was first described by Röckel et al. in 1980. Like all species within the genus Conus, these snails are predatory and venomous. They are capable of stinging humans, therefore live specimens should be handled carefully or not at all. Cone snails are distinguished by the obconic shaped shell, hence the name.

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