Yes, if the tank is large enough, they can do well in captivity.
some of the 'trophy' bluegill are 10+ years, im not sure how long they can live up to though.
Yes, as long as they were caught on hook and line and not netted.
Yes. But large catfish eat small bluegill.
No they live in freshwater.
No they live in freshwater.
Bluegill, Carp, and Coy
yes and sunfish do too.
Less than a foot
bluegill, bass, and some catfish
20 inches long
Gar and bluegill can potentially live together in the same aquatic environment, but there are important considerations. Gar are predatory fish and may see bluegill as prey, especially if the bluegill are small. If you choose to keep them together, it's best to ensure the tank or pond is large enough and that the bluegill are of a size that reduces the risk of them being eaten. Additionally, maintaining proper water conditions and providing hiding spots can help minimize stress for both species.
The average bluegill grows to around seven or eight inches maximum. But some have been caught over twelve inches in length.