Complex sentence: The butterfly perch, "Caesioperca lepidoptera", a sea bass of the subfamily "Anthiinae" of the family "Serranidae", is found in the eastern Indian Ocean, and southwest Pacific Ocean including southern Australia and New Zealand.
Split into simpler sentences: The butterfly perch ("Caesioperca lepidoptera ") is a species of ray-finned fish in the subfamily"Anthiinae ", part of the sea bass family"Serranidae". This fish is found in the eastern Indian Ocean, and the southwestern Pacific Ocean, including the waters around southern Australia and New Zealand.