My current collection sits at roughly 55–60 main frogs, with a rotating group of froglets always coming through from ongoing breeding projects (primarily Auratus and Tinctorius at the moment).
Species-wise, I keep a broad spread including Phyllobates, multiple Dendrobates morphs, Epipedobates anthonyi, Ranitomeya variabilis, Adelphobates, and a small group of Mantella. Most of my setups are bioactive and fairly established, with thriving cleanup crews and a more “ecosystem-driven” approach rather than sterile feeding systems.