The incredible Paedocypris progenetica, the smallest fish species in the world, is a member of the carp family found in peat swamp forests of Indonesia. Adult specimens, measuring only 7.9 mm (0.31 inches) in length, are some of the tiniest vertebrates on Earth. Its highly translucent body enables it to fade into the scenery while also doing quite well in acidic waters with a pH as lo... https://fishingproo.com/worlds-smallest-fish-species/