ya i was in a rush but to elaborate, Redfin and grass get about 12", these are IMO the best fish for aquarium keeping. They would need at least a 55 gal for 1, any more youd have to upgrade to a 75. They are coldwater fish so don't use a heater. Room temp if perfect. They are solitary fish, but can be housed with others(as long as they can not fit the other fish in their mouth. They enjoy sitting back in grasses or sticks, and do not move a whole lot unless you drop in a few feeders. They can be quite hard to get off live, but good foods include market shrimp, krill, and you can train them to eat pellets. Also when picking suitable tankmates i would advise more peacfull fish because the pickerel will not stand up for itself if picked on. fish such as madtoms or smaller bullheads would work as well as some orangespotted sunfish, or banded sunfish, crappie, in a big enough tank would work as well as perch. Any more Questions just ask.
