High. Rat-spotted fish is distributed in the Tapajós River in Brazil. As a main member of the river, it is one of the entry-level species. It is affordable, highly ornamental, and highly active in the water. There are a lot of wild rat spots on the market, and they have been artificially bred for a long time. The rat-spotted fish has a gray background all over its body, dotted with even black dots, and has white spots on the tips of its dorsal and caudal fins. It is named because its color resembles the rat spots found in marine fish.