Abstract / Introduction / Summary:
A mesoparasitic copepod, Serpentisaccus magnificus Brasiola, 1979 (Siphonostomatoida: Pen- nellidae) is recorded based on a single postmetamor- phic female specimen from a reared elegant firefish, Nemateleotris decora Randalle and Allen (Perci- formes: Ptereleotridae), in the tank of Kagoshima City Aquarium, Kagoshima Prefecture, southern Japan. The fish was recently collected from the Philippines and purchased by the Kagoshima City Aquarium. Nema- teleotris decora is a new host for the copepod.
