Neptis serena, the serene sailer or river sailer, is a butterfly in the family Nymphalidae. It is found in Senegal, Gambia, Guinea-Bissau, Guinea, Sierra Leone, Ghana, Togo, Nigeria, Cameroon, the Republic of the Congo, the Democratic Republic of the Congo, Ethiopia, Tanzania, Zambia, northern Botswana, Zimbabwe, Mozambique, South Africa and Yemen.[1] The habitat consists of open, grassy banks of streams and rivers in forests, heavy woodland, coastal bush and savanna.
Adult males mud-puddle. Adults are on wing from April to January.
The larvae feed on Cycina species.