patience is a virtue
give us more than a few hours before you give up
ok North American natives in a 100 gal
if you want schools, i would go with shiners, killies, top minnows, and such. research Wanstead style planted tanks, you could keep very large (30 or more) schools of shiners, chubs, etc
for sunfish type fish, I would put about 6-7 warmouth, they get large, easy to feed, and are not very aggressive, you will have to preform large water changes each week.
other types of sunfish will have 2 have lots of structure to break line of sight, but it can work
you may look into orange spot sunfish, or bantams they are smaller and fairly peaceful
bluegill, longears, pumkinseeds, and greens, you may have trouble with more than about 2-3 in a 100 gal (especially if they pair off)
Blue spots, flyers, black banded, are very difficult to keep, picky about food etc. but would be fine in large schools.
