Gnathiidae

Taxobox
name = Gnathiidae
regnum = Animalia
phylum = Arthropoda
subphylum = Crustacea
classis = Malacostraca
ordo = Isopoda
familia = Gnathiidae
familia_authority = Harger, 1880
subdivision_ranks = Genera
subdivision =
*"Bathygnathia"
*"Bythognathia"
*"Caecognathia"
*"Elaphognathia"
*"Euneognathia"
*"Gibbagnathia"
*"Gnathia"
*"Monodgnathia"
*"Paragnathia"
*"Thaumastognathia"

Gnathiidae is a family of crustaceans. Many species belonging to the Gnathiidae are parasites of fish.