That is cool but like someone else said. Not a good habit to teach ur fish. I lost 2 fish by them jumping out the tank. I didn't have a lid over my tanks though, u may or may not. Would have been a really cool vid.
My canopy extends the top of my tank 6 inches. I tie crickets on strings. He's pretty casual about ripping them off. quite often there will be a leg dangling after dinner time. I tie a noose so it's easy to get the little buggers tied up. Amazing how docile these fish are. If it doesn't fit in their mouth they pretty much leave it alone.