Originally Posted by otgarza
im looking into getting a 55, 75, or 90 gallon tank and i was wondering which would be better for having a pair of green terrors or a pair of jack dempseys id love to have both but i may only pick out one.
Unless you are purchasing a known breeding pair,it is not always as easy as placing a male and female together. Often times the fish you or I may select as a mate will be rejected by one or the other and then violence is common. Best to place a group of juveniles in the tank and let the fish decide on a mate and this usually happens around the four month mark in my expierience.
I do not agree that two male /female pair of Cichlids mentioned ,could get along in anything smaller than 125 gallons or larger. I say this because you indicated that you wish to place a pair, or two pair of these fish in same tank. In the event that the fish did indeed spawn ,and spawn was successful and resulted in fry,,, these cichlids like many,,, are quite defensive while protecting their young and other fishes would pay dearly for entering territory that the parents of fry have established which could be half the tank ,,and I would expect injury or death to be probable.
Were it me,, (and it ain't) I would place no more than one of each species in any size tank unless I had made arrangements to house the breeding pair elsewhere to prevent trouble. For cichlids,,it's all about territories and once fry are thrown into the mix,, all bet's are off as to who may be able to co-exist .
Have seen large tanks with all male or female cichlids that got along fairly well with enough room for each to claim a portion of the tank as it's turf .
I agree with getting the largest tank that you can and that you have space for if you are going to keep the fish mentioned.