Amphilophus labiatus has certainly earned its common name of "Red Devil". These are one of the most aggressive cichlids out there; despite that, they remain popular with hobbyists because of the large size and even larger personality. Best kept alone or in a mated pair, adults of these cichlids will not usual tolerate tankmates unless kept in a very large tank. They are also known to shift the substrate and decoration around to their liking. In spite of this, many keepers find themselves endeared by the level of intelligence and personality that these fish display. They will recognize people who feed them and will memorize feeding routines, getting excited when they think they will be fed. Although not the fish for everyone, for those looking for a "water dog" or a powerful beast of a fish, few other rival the Red Devil.