''Callionymus planus'', the Japanese darter dragonet, is a
species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...
of
dragonet native to the shallow
Pacific waters off of southern
Japan
Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...
and Taiwan. This species grows to a length of
SL.
References
P
Fish described in 1955
{{Callionymidae-stub