Spiny Riversnail
Io fluvialis
The spiny river snail, scientific name Io fluvialis, is a species of freshwater snail, an aquatic mollusk in the family Pleuroceridae. This is the only species in the genus Io. This species is endemic to the USA.
From the article Spiny river snail on Wikipedia (CC BY-SA), quoted section by section
Description
The shell morphology is very variable, with some individuals totally lacking spines. For this reason, it was formerly thought that many species existed within this genus.
Range & habitat
This species is endemic to the Tennessee River and its larger tributaries, but it has been largely extirpated due to pollution and the construction of dams.
Wikipedia: “Distribution”
What it does
These snails feed on the algal coating on rocks. Females lay between 20 and 100 eggs, which begin to hatch after 15 days.
Wikipedia: “Behavior”
Where it lives
Recorded sightings
—
geo-referenced records in GBIF, from museums, herbaria and field observers.
Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.
In the stacks
Searching the stacks…
Every page naming Io fluvialis in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 103448.