4 year old Angelfish with new Angelfish

Hello to all........

A friend of mine gave me a 55 gallon tank with some fish. There are 7 fish in this tank: 1 angelfish, 3 tetras (not sure what kind), some kind of catfish (but it's small, maybe 2 inches), a suckerfish (8 inches), and a small 2 inch fish (unknown). I would like to add more angelfish, but the angelfish that's in this tank is 4 years old. Is it a good idea to add new angelfish with the one I already have? Also, what about rainbow fish? I've heard mixed reviews about adding rainbow fish to an aquarium that has angelfish in it. Do they make "good" tank mates for the angelfish?

Hi Steve,

My husband and I like the "Jewel" Rainbow fish or Boesemani Rainbow fish. I would prefer the jewel rainbow because there a larger size, like the angelfish. What would you suggest?

Hi Steve,

You just brought up another question for me.....would 6-8 more fish, at that size be suitable for my 55 gallon tank? I already have 7 fish in it (see first post). Thanks for the size information, too. I was under the impression that there was a 2 inch difference between the two.

Hi Steve,

I have a Penguin Bio-Wheel 350 and as far as the water changes, I haven't done a change yet because we just got the established this weekend.

I really have no idea........I've heard it depends on what I'm feeding them and how much I feed them.

I saw on a few websites that I should feed the angelfish twice a day, but in small amounts that it will eat in 5 min with the consideration of the other fish. I'm still trying to figure out what these little guys prefer and I've noticed that there is some food left over that goes to the bottom of the tank. With that being said, my best guess would be 50% water changes, maybe once every week or two weeks. I'm really talking in an area that I'm not sure about. I'm a beginner!