Ferrissia neozelanica, also known as Gundlachia neozelanica, is a species of small freshwater limpet, an aquatic pulmonate gastropod mollusk, or micromollusk, in the family Planorbidae.
[1] Shell depressed conoidal, oval-oblong, the sides straightened, subparallel, thin, semitransparent, horn-colour, with a blackish-green coating.
Apex a little inclined to the right, situated at the posterior sixth of the length, flatly convex anteriorly; concentric lines of growth at regular intervals.
[5] These animals have a pallial lung, as do all pulmonate snails, but they also have a false gill or "pseudobranch".
[5] These tiny limpets are found attached to stems and undersides of leaves of aquatic plants in quiet waters.