Like Jeta said give them more cover, most of your brightly colored fish from CA come from muddy/dark water with lots of cover which is why they are so colorful in the first place. Variants that come from clear shallow water are typically very drab to blend in as to not be noticed by Piscivorous birds.
Also allot of your cichlids like the Meeki come from southern Mexico and are typically found in small, ponds, streams/creeks, tributaries and swamps. With the larger fish found in the main channels.
Also River there are plenty of people like my self that keep Amatitlania, Cryptoheros, Archocentrus, and Thorichthys in larger tanks. As soon as my racks are welded up this weekend my Thorichthys sp "Gold Mixteco" will have their own 125g. Rusty Wessel keeps all this Thorichthys breeding groups in 125s.
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