These are awesome! I think adding more stuff like this will do wonders for making the world feel more alive, i also think it'd be cool if we could catch and eat them for whatever the lowest possible food value is. It would be an interesting, convenient, and IMO fun way to keep you engaged and staving off hunger while you are moving around and doing other things. I wouldnt ever want them to be something you could fully live off of, just something that for all intents and purposes "slows" the need to eat your other types of food, if that makes sense.