Bolivian Rams are for you. They can tolerate harder water, are bigger, and are actually quite beautiful.
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- Crenicichla Compressiceps
If you don't care for other continents:
- Pelvicachromis Pulcher (Kribs)
- Anomalochromis Thomasi
- Central American Cryptoheros, Archocentrus, and Amatitliana's will work.
