i have a lot of questions for my electric yellow cichlid?

  1.) How long does it take for it to grow?

2.) How big does it grow?

3.) If they lay eggs how long do they take for them to hatch?

4.) Until how long could i change the water if they lay eggs?

5.) How long does a cichlid last?
I think they grow up to 8 inches if im not mistakened

you cannot change the water if they lay eggs.