Knipowitschia radovici, the Norin goby, is a species of goby endemic to Croatia where it only occurs in the drainage basin of the Neretva River, where adults inhabit the deepest parts of the rivers (down to ) in the strongest current (juveniles are found in shallower waters). This species can reach a length of SL. The specific name honours the Ornithologist Dragan RadoviÃÂ, a friend of the author, Marcelo KovaÃÂiÃÂ, who encouraged him to sample in the waterbodies of Croatia.