I just saw some Cichlids at the pet shop and they were very beautiful. They're like saltwater fishes because of their colors like blue, yellow, pink, and many others, unlike some common
freshwater fish that are often black and white, maybe with a small touch of color. I asked the owner if I can keep some small Cichlids in my 20-gallon (I think a little more than 20-gallons) freshwater community tank, but he says that they can be aggressive and territorial. I researched about cichlids in the web and says that they can be sometimes aggressive and territorial, but there are also mild and peaceful cichlids, like the Discus, and won't be aggressive if they have a place (cave, rock, overturned pot or other hiding place) of their own. I'm confused;
Can you give me more information about keeping cichlids in my community tank? I really want some of these awesome fish. Can you also give me a list of some not-so-aggressive Cichlids? Thanks in advance!