👉 Platysma, also known as a dwarf platy, is a type of fish native to the Pacific Ocean and its surrounding waters. They are characterized by their small size, typically being less than 10-20 cm in length, making them among the smallest fish species on Earth. Platysmas can be found primarily in saltwater environments, such as bays or estuaries, where they have adapted to live in water with a high salinity content. Their diet consists