nice looking. but id be highly dubious of anyone who says they can look at a pic and tell you the strain....pretty much impossible. the only thing anyone could be sure of indica dominate vs sativa dominate. even that can be tough if the plant is a 50/50 mix and doesnt really display traits of one over the other.
yours look like sativa by the leaves and indica-like from the spacing between nodes.
the only i can be sure of is it looks healthy. being in south africa probably a good guess its maybe durban or malawi?