i have a friend that kept a baby bass in a 90 gallon, he kept it for I think a year or two and then let it go as it got too big. he fed it worms and minnows from the bait shop a few times a week. if you have any specific questions i could ask and get you an "in my experience" answer. also yeah it is probably illegal in many places to keep a small native fish like that in captivity, now it is not like the DNR comes around and checks everyones house for fish but if i was you i would just be careful who you showed it too or told about it.
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