yeah even my horn shark wont touch are will spit out if its not squid!! My LFS has trouble feeding there new sharks and i told him try squid and with no surprise they eat it ever timeI think the Bamboos really like squid. They can get picky if you dont give them a variety between feedings. One thing I found is the sharks I currently have dont like the frozen anchovies that are prepared for "bait". I think they are salted or something with them they dont like. Get fresh fish and cut it up. Mine love sardine fillets and squid. Eventually made sausage pellets for them that has vitamins, fish, squid amd shrimp ground up. They love them and not as messy to feed them.