mick's picture

Freshwater mussel

Observed: 24th November 2009 By: mick
London Natural History Society
mick’s reputation in Invertebratesmick’s reputation in Invertebrates
Freshwater mussel

I picked this shell up in the gravel of the tidal Thames at Richmond. I wonder if it is Sphaerium rivicola. It is 22mm across at the widest. There were many the same.

Species interactions

No interactions present.


mick's picture

Corbicula fluminea

This tuns out to be Corbicula fluminea, the Asian Clam, a recently arrived invasive. It is not listed in the NBN as far as I can see. M.

Martin Harvey's picture

invasive species

An interesting find. There is some background information at:

and see also the Northern Irish Habitas website:

(it's not in Northern Ireland yet but they are loking out for it)

Entomologist and biological recorder