Category "crudo"

How can I tell if a fish can safely be prepared "crudo"?

Is there something you can look for? Am I left to the seller's word and my own discernment?

What type of fish would be best suited for a trio pairing of sashimi, crudo and ceviche?

I am preparing a trio of fish to exemplify the different ways and methods of preparing fish without cooking it in a traditional manner. The three ways I am prep