Rankias
Rankias is a genus of freshwater snails belonging to the family Ampullariidae, commonly known as apple snails. These snails are native to the freshwater ecosystems of Central and South America, with several species found across the Amazon Basin and other river systems. They are characterized by their relatively large, globular shells, which can range in color from yellowish-brown to dark brown, and sometimes exhibit spiral banding. The aperture of the shell is typically ovate and wide.
The morphology of Rankias is adapted for their aquatic lifestyle. They possess a single gill for respiration
Reproduction in Rankias involves sexual reproduction, with females laying clutches of gelatinous egg masses above the