My lion eats ghost shrimp as treats and regularly silversides and krill. I thought mollies were a freshwater fish, even though they can live in brackish and full salt systems. My concern is that the lion may not be able to handle the fatty content of mollies, as lion's livers cannot accomodate large fat content. IMO, I would start with ghost shrimp and wean over to frozen. There are a ton of threads on ideas on how to accomplish this. Just use the search feature on the message board. BTW, great looking fish!!!!!