Grass carp on a 3wt would be a HOOT!

Grass Carp, Bighead Carp, and Silver Carp must all be related...they have very similar-shaped mouths.

They are probably all from Asia, but typically here "Asian Carp" refers to both the Bighead Carp and the Silver Carp (Silvers are the ones that jump out of the water when a boat motor goes by).

Although the Grassies are primarily vegetarian (but will take nymphs and such), Bigheads and Silvers supposedly eat mainly plankton.

Ok...after typing the above, I found THIS study by the USGS regarding Asian Carps (Bigheads, Silvers, Grass, and Black). I thought it was pretty interesting:
http://www.ifishillinois.org/asianca...pm/Chapman.pdf