Least killifish swimming in an aquarium.

Least Killifish: Ultimate Guide (Care, Diet, Breeding & More)

Despite the moniker of being the Least Killifish and being the 7th smallest fish in the world, this little fighter is a bundle of energy and curiosity. The Least Killifish, Heterandria formosa also known as the Lesser Killifish, Dwarf Topminnow or Midget Livebearer truly has a personality greater than its namesake size. It’s one of …

Least Killifish: Ultimate Guide (Care, Diet, Breeding & More) Read More ยป