I have a 55 gallon tank and thus far I have:
1 Dalmation Mollie
4 Flame Dwarf Gouramis
2 Gold Gouramis
2 Opaline Gouramis
4 Fancy tailed Guppies
2 Albino Catfish
1 Catfish whose name I forgot, just bought him
1 Betta
All of these have been "8pm, run to the fish store", impulse buys. lol
I'm now looking for just 'fillers', maybe. More color, or more bottom feeders to clean up after these pigs. Any suggestions?
More guppies? An invertebrate?
1 Dalmation Mollie
4 Flame Dwarf Gouramis
2 Gold Gouramis
2 Opaline Gouramis
4 Fancy tailed Guppies
2 Albino Catfish
1 Catfish whose name I forgot, just bought him
1 Betta
All of these have been "8pm, run to the fish store", impulse buys. lol
I'm now looking for just 'fillers', maybe. More color, or more bottom feeders to clean up after these pigs. Any suggestions?
More guppies? An invertebrate?

They're awesome in a large shoal though, at least I think they are!
A 55 Gallon could probably handle a bristlenose plec (one of the smaller varieties)
(real) plants not necessary but somewhere for them to hide and have their own space is good.
Vallis and Elodea Densa don't need any special treatment and will grow in almost any tank.
I'd be quick at your LFS before someone else gets their hands on them!! 