sorry about the no reply everyone....I've been away. Seriousdude is correct. The only thing he sent me was a piece of paper with directions with pictures on it. I have not tried this yet, but the idea seems pretty sound. Like someone posted before, I bought it to catch a bicolor pseudochromis who is impossible to catch. But now that I have the idea, I don't need to catch him anymore, so I guess I'll wait until I do. The only other thing I would add is that on the bottle, he says to place holes about and inch below the triangular flaps so when you pull the bottle out, the water runs out the holes and the water line is below the triangles. Also, I think one key is not feeding your fish for two or three days so they're hungry. And he also says to use fishing line attached to the bottle and when the fish swims in, QUICKLY raise the bottle. Seems like it would work to me.