Whitespotted pygmy filefish


  • In Japan, this species spawns in the early morning on brown algae. Females care for eggs until hatching, by fanning the water to keep eggs oxygenated and driving other fishes away. Males may also guard eggs..
  • Spawning occurs from May to October in Japan.
  • Mainly feeds on detritus, polychaetes and other small invertebrates.


  • Body reddish brown with numerous white spots.
  • Like most filefishes, the fish dorsal spine is thick and strong.

Common Name: Whitespotted pygmy filefish

Family Common Name: Filefishes

Scientific Name: Rudarius ercodes___(Jordan & Fowler, 1902)

Genus: Rudarius

Maximum Length: 7.5 cm (Total Length)