''Rudarius ercodes'', the whitespotted pygmy filefish, is a species of reef filefish in the family Monacanthidae. It is a small fish, growing to only 5 cm (2 in), and is found in the temperate waters of Japan. It is kept in captivity and has been successfully captive bred.

References

* Monacanthidae Fish of East Asia Fish described in 1902 Taxa named by David Starr Jordan {{Tetraodontiformes-stub