Naughty Tuck! dont eat the furniture!

Last night, while watching the fish, Tuck (one of the siamese algae eaters) swam around the driftwood and stopped over a bed of Riccia. With one eye on me he selected a strand of Riccia and ate it infront of me!!! then sat there as it digested my expensive aqaruium carpet!
Riccia was 6 bucks a pop! and it does costs a fortune! but what is money to a fish? certianly to of any importance to Tuck as he was munching on it like it was green spagetti!!!!