Abstract
Kuiterichthys pietschi, a new species of frogfish of the teleost order Lophiiformes, family Antennariidae, subfamily Histiophryninae, is described from 20 specimens collected at depths of 60–89 m (average 73 m) off New South Wales, Australia. A member of the antennariid genus Kuiterichthys, the new species differs from its congener in escal morphology, a somewhat shorter second dorsal-fin spine (17.0–22.5% SL vs. 17.8–29.8%); 20 vertebrae vs. 21; 10–11 dorsal-fin rays vs. 12–14; and 7–8 pectoral-fin rays vs. 9–10. The new species is described and compared with its purported sister species, Kuiterichthys furcipilis.