Celebes Rainbowfish are native to the island of Sulawesi, Indonesia. This island was formerly known as Celebes, which is where these fish got their name. This species of Rainbowfish can be found in slow-flowing waters such as streams and estuaries. Though they do not require salt content in their tank water, these fish are capable of surviving in brackish conditions. Celebes Rainbowfish have translucent bodies with greenish undertones. These fish may also exhibit yellow and black markings on the fins and males of the species may develop thread-like fin extensions.