Melanotaenia trifasciata are found in the North and North Eastern parts of N.T and the upper areas of the Cape York Peninsula. They are quite a few varieties of these fish and most will grow to 12cm but more common at 5-8cm. They are also know as Banded Rainbowfish due to their dark lateral strip down the center of their body. Below is the Mel trifasciata found in Rocky bottom Creek in Arnhem Land N.T (A permit is required to enter Arnhem Land).