Blue bastard (Plectorhinchus caeruleonothus) is new species of fish officially discovered in Australia. The fish is blue when adult. Its found in north Australia and was considered as a legend which existed only in fishermen tales. The fish is very difficult to catch due to its combative skills, and managed to remain hidden from Human knowledge. Plectorhinchus caeruleonothus was identified through several features unique to it, such as a distinctive pattern on juveniles and minute nostrils.