all my Central Americans (thorikthys, anything with a big eye and a small mouth!) get along very, very well. If anything the jewels are slightly more aggressive.
any thing you want they will take care of them selves. i have two with a 7" green texas 5.5" tiger oscar. 6" blue ahli and many other medium cichlids. at 1 point also 7" green terror. in 90 g setup. just give them places to swim and hide. but they will stand their ground when it comes down to it. good luck
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