The message
from Kay contains these words:

Thanks - never heard of it, even.

Monkey musk. Relative of the yellow thing (sometimes with red spots)
that you find in shallow stony rivers.

Frog? Jaundiced trout?

(Still never heard of it, but thanks for the enlargement.)

--
Rusty
horrid dot squeak snailything zetnet point co full-stop uk
http://www.users.zetnet.co.uk/hi-fi/