Strangest thing happened this morning; I went to feed the mosquito fish I've been using to cycle the tank and to my surprise I spotted two young dime shaped others. Not totally sure as to the species but they look like they might just be young sunfish of some sort - must have been some eggs hitchhiking on some of the plants I collected.
Hard to get a decent pic as they are small and fast and my macro is slow and with a very limited focal point.
In MN you can keep a sunfish or bluegill under normal fishing regulations, however, as long as it is alive and in your tank, it is considered a part of your bag limit for sport angling. Maybe an angle to look into. Good luck and the tank is awesome. Such a cool idea. I started a similar project and now have the inspiration to complete it!
I kept some as a kid out of the tank next to the house! We Also catch the juvies in out cast nets when casting for shad to fish with in the spring!!! We throw them back though! I might have to keep a few to see how they look when grown in a environment with no predators!
They are doing great. Their tank is unheated and located in an uninsulated detached garaged. Night time outdoor temps were dropping as low as 27f and averaging around 34 so I assume indoor temps were just a tad above freezing in the garage and they seemed to have no problem at all. Didn't even seem to slow down, quite feisty fish when they want to be.
Here's a poor pic of them taken today and a bit of a better quality video.