Looks like Neritina pulligera (Linnaeus, 1767) to me.  The orange aperture
with the black parietal shelf (the area on the underside of the of the snail
opposite the aperture) are pretty distinctive.  It is a very wide-spread and
common species in brackish and freshwater throughout much of the
Indo-Pacific.  It is one of the larger nerites with specimens commonly found
in the 20 to 30mm size range.  The world record size is 43mm.  It should do
well in an aquarium, but it will not be able to reproduce as the newly
hatched veligers need a short period in salt water to develop prior to
settling to the substrate and crawling back into freshwater.

Tom Eichhorst in New Mexico, USA

-----Original Message-----
From: Conchologists List [mailto:[log in to unmask]]On Behalf Of
Anna Robinson
Sent: Thursday, March 20, 2008 12:01 PM
To: [log in to unmask]
Subject: [CONCH-L] New snail available - a Nerite imposter?


Hi Guys

Another new freshwater snail has turned up in aquatic shops here in the UK.
The wholesalers sell it as "Filopaludina sp." However, it looks nothing like
any of the Filopaludina images I have ever seen. I'll swear it's another
Nerite. I've managed to take a few pictures. Any ideas, Tom or anyone?

http://www.waysideaquatics.co.uk/blackneriteoutofwater.JPG

http://www.waysideaquatics.co.uk/blacknerite.JPG

http://www.waysideaquatics.co.uk/neritemouth.JPG


Thanks for any help!
Anna

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