Kihansi spray toads are probably ovoviviparous like the other Nectoprhynoides species where fertilization is internal and eggs and developing tadpoles are retained in the female’s body until the young are born as small toadlets. The holotype, a female 19.8mm contained 16 embryos at Gosner stage 31.
This species clearly exhibits extreme philopatry being known from only a few populations in an area of barely 2 hectares, and it is likely that dispersal beyond a home patch was limited or non-existent.