Thread Fin Rainbow fish | Feather Fin Rainbow Fish.
It is one of the beautiful and most attractive rainbow to have in a tropical community planted aquarium / tank or species only planted tank. They have a small streamlined body with long rays from dorsal and anal fins. Males will have long thread like rays when compared to females. And they have a basic Grey/silver colored body and males exhibits different color based on its health and tank conditions. When compared to other rainbow species they have small narrow throats so care should be taken while feeding.