The silver cyprinid, Rastrineobola argentea, is a species of ray-finned fish in the family Cyprinidae, the only member of the genus Rastrineobola.

It is found in the Lake Victoria of Kenya, Tanzania, and Uganda. Its local names are omena (Kenya), dagaa (Tanzania), and mukene (Uganda).

Being a fast-swimming rather small fish of the open waters, it has been better able to withstand the ecological upheaval caused mainly by the introduced predator Lates niloticus (Nile perch) than most other local species. It is not considered a threatened species by the IUCN. (source)