Rudarius ercodes Jordan & Fowler, 1902
Whitespotted pygmy filefish
Rudarius ercodes
photo by Marco Chan@114°E Hong Kong Reef Fish Survey

Family:  Monacanthidae (Filefishes)
Max. size:  7.5 cm TL (male/unsexed)
Environment:  reef-associated; marine, oceanodromous
Distribution:  Northwest Pacific: Taiwan (Ref. 47843), Japan (central Honshu to southern Kyushu) and southern Korea.
Biology:  Found among bottom cover (Ref. 9710). Oviparous (Ref. 205). Females attach adhesive eggs to seaweed with the mouth and guard them until embryos hatch (Ref. 40060).
IUCN Red List Status: Least Concern (LC); Date assessed: 18 July 2017 Ref. (130435)
Threat to humans:  harmless

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