The systematics of minnows and their relatives (Cypriniformes) using phylogenomics The evolution of miniaturization in minnows The systematics of the South American catfish subfamilies Hypostominae and Ancistrinae (Loricariidae), and their evolutionary ecology Formation of the modern Guyana ichthyofauna Phylogenetics of the North American cavefishes (Amblyopsidae), and revision of the Southern Cavefish (Typhlichthys subterraneus)