Yes, German Blue Rams can be kept alone in aquariums. However, it’s essential to understand that these rams, like many cichlids, tend to be social and would do well with a companion or a group. They often form monogamous pairs, especially during breeding, displaying interesting territorial and nurturing behaviors in such scenarios.
Keeping lone German Blue Rams may limit the opportunity for you to witness these behaviors. A companion’s presence provides stimulus, activity, and, in some instances, even stress relief, which can ensure these elegant fish’s general health, color brilliance, and life expectancy. If you prefer to keep them alone, ensuring a varied environment with enough hiding spots and open spaces will contribute to their well-being.