My hubby brought this home today and it was labeled "bamboo cat shark egg" That's what it was sold to the pet store as. I don't always think the distributors know what their looking at so I did some photo recon. It don't seem big enough or wide enough for a bamboo. Seems more like a swell shark but I am not an egg expert. This is my first egg. (not my first shark) Have been keeping sharks for a long time just first egg. Can anyone tell me what this baby is?