Paedocypris progenetica is the known smallest fish in the world. Paedocypris is a fish genus in the family Cyprinidae (which also includes carps and minnows) which is recorded form Indonesia. Before discovering the smallest frog as well as vertebrate named
Longfin snake-eel: Pisodonophis cancrivorus (Richardson, 1844)
Systematic position Phylum: Chordata Class: Actinopterygii (Ray-finned fishes) Order: Anguilliformes (spiny eels) Family: Ophichthidae (snake eels) Genus: Pisodonophis Species: P. cancrivorus Synonyms Myrophis chrysogaster Macleay, 1881 Ophichthus chilkensis Chaudhuri, 1916 Ophisurus cancrivorus Richardson, 1848 Ophisurus nigrepinnis Liénard, 1842 Pisodonophis cancrivorus