Priacanthus blochii, the paeony bulleye, is a species of marine ray finned fish, a bigeye in the family Priacanthidae.

Priacanthus blochii has a red body and is commonly 40 centimetres (16 in) in length.

[3] Priacanthus blochii occurs in the waters of southern Africa to French Polynesia.

[3] Priacanthus blochii is found at depths of 8 to 250 metres in caves or under ledges and inhabits lagoons and seaward reefs.

[3] Priacanthus blochii was first formally described in 1853 by the Dutch ichthyologist and herpetologist Pieter Bleeker (1819–1874) with the type localities given as Jakarta, Indonesia, Java Sea, eastern Indian Ocean; Sibogha, western Sumatra, Indonesia, eastern Indian Ocean; Ambon Bay, Ambon Island, Molucca Islands, Indonesia.