User blog comment:D2r/Unanswered Questions of Redwall/@comment-174.70.39.218-20110425192803
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I have an answer for 8: The fish can breed, you know. Self population. We have plenty of lakes around where I live, without rivers. Granted, they WERE stocked by people (who's to say when Redwall was built they didn't stock the pond with fish?), but as it is the fish breed so much that there aren't any size limit on some species at specific times in the year -- this is so they don't OVERbreed. =)