Freakgecko91
Aquarium Advice Addict
I reccomend New World cichlids because to me they are much more interesting. They have what seems to be moods and are what I call a Wet Pet. They can become attached to you almost like a dog like when you approach the tank they come swimming over quickly almost like they missed you. Also I would advise against any live plants in all cichlid tanks except for dwarf cichlids. As far as your territory question goes it really depends on the fish in a New world type tank in a 55 gallon you could do a single large cichlid. Or a breeding pair of medium sized cichlids. Or even 2 medium sized cichlids and a few tankmates. For example in my 55 gallon I have a single Jack Dempsey and 4 pictus cats. The tank seems to be doing extremely well and the JD has not shown territorial behavior because he has enty of space and no other cichlids to compete with for territory. I think a good solo cichlid for a 55 gallon is a single male Texas cichlid. Max out at 12 inches usually 10. Or a single male green terror max out at 12 but usually only gets up to 10. As far as a breeding pair you could do a pair of blue Acaras, convicts or firemouths If you want some tankmates I think you could do a stock of 1- Blue Acara 1- Firemouth 1- Raphael or Cuckoo catfish 6- Giant danios or 7 tiger barbs odd numbers work better. That type of stock though will require good maintenance Or you could do something like mine with a jack Demosey or female green terror make sure it's female and a few tankmates.
You are generalizing hundreds of species into one description, there are cichlids that fit every size and shape, from incredibly peaceful to some of the most aggressive fish on earth. I know of many species that will not uproot plants nor touch them, more than just "dwarves". Please try not to make untrue statements without proper research. Hoplarchus psittacus is a cichlid that reaches 10" and is extremely peaceful and will not destroy plants. Australoheros sp. red ceibal reach 7-8" and live among plants in the wild and require them for spawning. Many new worlds are not the "wet pet" type actually,
So, to addess your question, it seems you know what you want your tank to look like. So let me ask you these questions:
What kind of fish do you have experience with?
What kind of fish are you looking for? Colorful? Rare? Interesting behavior? Evolutionary marvels?
What's your budget?
Are there any cichlids (or other fish) you are NOT interested in?
How will you be purchasing the fish? LFS or online?
What temperaments are you looking for? Do you want a relaxation tank, or an exciting tank, or a predatory tank?
Answer these and you'll get much better answers, and I know that I for one can point you in the right directions after getting to know you as a hobbyist a little better.