The type-host in the original publication is Centronotus nebulosa but this name is not anymore in use.
 
No specimen is available in the collections of the University of Tokyo.
It was also recorded on another Pholidae, the rock gunnel Pholis gunnellus off Ireland.

The type-locality is off Japan.

In 1940, Crofton gave a note on specimens found on the gills of Pholis gunnellus (designated as Centronotus gunnellus), collected from rock-pools at Cullercoats, Northumberland.
The type-host in the original publication is Centronotus nebulosa but this name is not anymore in use.  
No specimen is available in the collections of the University of Tokyo. It was also recorded on another Pholidae, the rock gunnel Pholis gunnellus off Ireland. 
The type-locality is off Japan. 
In 1940, Crofton gave a note on specimens found on the gills of Pholis gunnellus (designated as Centronotus gunnellus), collected from rock-pools at Cullercoats, Northumberland.
Microcotyle fusiformis