The Emerald Green Betta found in the basins of the Mekong and the Chao Phraya
The emerald green Betta, or Betta smaragdina, can grow to about three inches long. These fish, which are native to Borneo and live in the basins of the Mekong and Chao Phraya rivers, can be kept in pairs, species tanks, and community tanks. The IUCN Red List of endangered species says that this species is vulnerable, which means that it is important to keep it alive. Conditions in the water are not important for B. smaragdina because they can live in a wide range of chemical conditions. According to the International Betta Congress, males are brighter in color and may have longer fins. Females, on the other hand, are browner, but they should have an ovipositor, or egg tube, on their bodies. People know that males start spawning and get females to come to the nest to spawn. The Pink Pearl Betta is a name for Betta smaragdina.