I just posted the latest and greatest fsh jar file. This update includes the following:
Predators will now eat dead fsh they pass - even if they wouldn't normally attack.
Code wise, I've renamed the FishType enum to SpriteType. I'm thinking about getting rid of it all together. I think I could replace it with an interface. I've already got one class per sprite type anyway, so I might as well reduce some clutter. I'll have to think about that.