The type locality is a karstic freshwater stream flowing under 80% forest cover with a mixed substrate of mud and sand plus patches of leaf litter. O. woworae was collected from a still pool around 3-4 m deep, opposite an affluent spring, where it was schooling with a species of Nomorhamphus which may turn out to be a form of N. ebrardtii but has subsequently appeared in the aquarium trad...