Summarize this article:

Bass are very active and swim most of the day and night. They will often start to follow you along the tank once they get to know the feeding routine. Bass do grow very quickly, so try to catch or buy a smaller one, close to 3 to 4 inches (7.6 to 10.2cm) so you can enjoy watching it grow. Bass enjoy small insects, algae, shrimp, and bloodworms, and they also can be taught to eat flakes or pellets. Bass will generally eat about 2/3 of their weight every day, which means you'll need to keep an eye out on your filter to make sure it keeps working properly. You can easily catch sunfish in the wild, and there are about 30 separate species. These are also great fish if you have a smaller aquarium. They'd do well in a 55 to 75USgal (210 to 280L) tank. Most sunfish eat insects, small fish, and crustaceans, and they don't grow as fast as bass. Large, adult sunfish can become territorial, so keep an eye on their behavior. If they get too aggressive, they may need to be moved into their own tank. If you love the look of tropical fish, the pumpkinseed would be a good choice for you as they're the most similar in coloring. At the most, the pumpkinseed should only grow to be 9 inches (23cm), which makes it a nice tank addition. Pumpkinseed fish like to eat small insects, snails, and larvae. They'll also eat shrimp, bloodworms, flakes, and pellets. Pumpkinseed fish can be very aggressive, so keep an eye out and remove them if they start attacking their neighbors. They eat algae, plankton, and small insects, but they will also eat flakes, shrimp, and bloodworms. At the most, add 2 minnows per 10 gallons (38L) of water. These are fish that can withstand a lot of changes in their environment, which makes them a nice investment for your aquarium. If you're buying these fish, they're often called "rosy reds." Trout need colder temperatures than most other gamefish, so they often can't be combined with the general varieties, like bass and sunfish. Keep the temperature at 59 to 63F (15 to 17C). Trout also need a lot of strong currents, so make sure your tank is equipped to aerate the water a lot. For a 1,000USgal (3,800L) tank, at most you'd want to add 2 to 3 trout, so keep that in mind when choosing fish for your aquarium. Trout like to eat leeches, bloodworms, and small insects, and they also can be taught to eat flakes and pellets. The brown trout and the rainbow trout are the ones most often kept in aquariums. Carp will grow to be up to 4 feet (48in) and produce an excessive amount of waste. Alligator gar can exceed 6 feet (72in), and sturgeon can also grow to 6 feet (72in) and weigh over 200 pounds (91kg). A lot of these fish would also eat their tank mates. When in doubt, do some research or ask someone who has an established gamefish aquarium for recommendations.

Summary:
Keep bass in your aquarium for a lively, animated fish. Choose freshwater sunfish for a colorful fish that'll thrive in a tank. Add the colorful pumpkinseed to your tank for an iridescent addition. Pick the fathead minnow for a durable addition to your tank. Select trout for your tank if you can keep the temperature cooler. Avoid buying or catching fish that will grow to be too large.