A MI fishing license is necessary to collect legally. Non-game and non-protected fish may be kept in home aquaria. Game fish may be kept if caught legally and are legal size.
Northern Long-Ear Sunfish can be caught in the lakes within Bald Mountain park in Oakland county. While not as colorful as Centrals, they are still very nice. Pumpkinseeds are another good choice as they stay small. Both species adapt quickly to aquarium life. Green sunfish are good for tanks if you prefer something more aggressive.
Rainbow, Green-Sided, and Fantail darters are easily collected in riffles of clean local creeks. Rainbows habitate rocky/cobble, and Green-Sided will be in plants/algae growth. Black-Sided darters can sometimes be found in the backwaters of the same creeks. Johnnys are found in slower creeks, sometimes on mud/clay bottoms. Leasts are found in shallow, weedy areas of still lakes. All these darters are fine at room temperatures but the Rainbows, Green-Sided, and fantails require sufficient oxygenation. Power heads or outside power filters are good alternatives. A chiller isn't necessary.