[alprazo]

Would hate to see you give up on sharks. Many of them do have personalities, my short tails are like pufferfish and allow me to pick them up and hold them. One even spits at me on occasion.

As for the feeding, I don't see anything wrong with what you were doing. Sharks will eat from a carcass that was floating for weeks. I think it was probably food tainted before the initial freezing, but if you are only feeding food specifically for fish, then maybe it was a bacteria that grew while it was thawed. I almost lost one to a bad scallop from the supermarket and the shark was near death within a day of eating it.

Again a vitamin deficiency or viral illness could have also cause these symptoms too