USA - Copperband Butterfly (CBB) feeder
Want to ween your CBB off of live food/clams, or, teach him to feed out of this so he's not out-competed in the tank during feeding time (*cough* tangs *cough*)? Then you need this in your life, so does your CBB, hah. The 'inside' ends sit one over the other which is where you place your yummy...
www.reef2reef.com
It might work for the CBB, they are a nosy body.