Geophagus, Severums, Uarus, Angelfish, chocolate cichlid come to mind for cichlids.....
Striped Raphel catfish, corys, Sydontis, etc... come to mind for catfish....
Silverdollars, tinfoil barbs, Redtail Shark, Tiger barbs, etc...for community fish
ABF(African butterfly fish), bichirs, puffer fish,other gouramis come to mind for oddballs.
severum, geo, angels and uaru will get beat en up by this kissing gourami by the temperament it sounds like it has. plus, the 75 gallon tank really wont be big enough for another substantial fish like a geo, uaru, sev, or cocolate cichlid once the gourami is grown.
corydoras will not work in a kissing gourami tank, especially since the OP already noted that the gourami attacked the corydoras in the 30 gallon community.
silver dollars might work, but they get pretty large and need to be in schools. there really isnt enough room for a school of them when the kissing gourami is fully grown.
tinfoil barbs just get way too big for a 75 when kept in a school like they should. 180 minimum for a school of 6 tinfoils IMO.
tiger barbs will get the crud beaten out of them by a kissing gourami, so adding them to this tank probably wont be the best idea.
adding an african butterfly fish is also not the best idea, since they tend to be very slow moving and "peacful." i can see a kissing gourami tearing straight through one if it wanted.
a bichir could work, perhaps. a sengal would be an ok addition.
puffers will not work, because most puffers that are substantial enough to be kept with a kissing gourami are either 1) brackish or 2) WAY to aggressive for even a kissing gourami or 3) to messy to keep with another substantial fish in a 75. puffers really shouldnt be kept with other fish to e honest.
other gouramis would get ripped to shreds by a kissing gourami. plus, it really is not advisable to keep gouramis with other gouramis. of course, there are some exceptions, but for the majoirty of species, keep one gourami per tank.
