* Title should be combining tanks!

Hi. At the moment I have 2 separate tanks and I was wanting to find out if I could put the fish together.

The First tank has 2 x Silver Dollars and 2 x Jewel Cichlids. The 2nd tank has 2 x Electric Yellows, 1 Electric Blue and 1 Powder Blue.

The fish in the first tank are mature, approx 4 years old, the 2nd tank are approx 2 years old.

The tank they would be in is around 200L.