Andy Sager
Aquarium Advice Addict
Sorry to take this thread slightly off subject, but you obviously have tremendous experience with angelfish and that will be very helpful to me! My wife has begged and begged for angelfish for quite some time now. We have always kept African cichlids, so adding angels would obviously be irresponsible and a waste of money.
However!
Sunday we acquired a 65 gallon hexagon aquarium, and I have promised my wife it would be her angelfish tank. We are trying to figure out a safe number of angels it will hold. The tank is 24.25" from flat panel to flat panel, 28" from point to point, and 30.5" deep. She would like to keep 4-6 angels in it, but concerned about aggressiveness that may come. Do you have any input on this?
While Angels are also Cichlids, they are unlike your Africans in that they do require space to hide from each other. Unfortunately, hex tanks don't give a lot of space opposed to gallonage so you will not be able to house as many Angels in that tank opposed to a rectangular 65 gal tank. That said, you can start with up to 6-8 small Angels but you will need to thin them out as they get older. Eventually, you will probably only be able to keep 2 Angels at med/large to large size. The reason you don't want to start with only 2, if you are going with small fish, is to deflect attention amongst more fish. Angels live in a hierarchy society so if you only have 2 small ones, the chances of one being bullied by the "top fish" is greater. The other option is to get 2 or 3 larger sized Angels at the same time so they will all have to establish a territory at the same time and can better handle any aggression from the others. You can add some other "dither" fish in the tank to help make the tank look fuller but I suggest fish that will not grow too large or need the same area of the tank that the Angels would prefer.
Hope this helps.