The Bolivian Ram (Mikrogeophagus altispinosus) is a dwarf cichlid native to the Mamoré River basin in Bolivia and the Guaporé River in Brazil. It inhabits slow-moving, warm, shallow waters rich in leaf litter and submerged vegetation. Compared to the closely related German Blue Ram, the Bolivian Ram is hardier, more adaptable to a wider pH and hardness range, and considerably more beginner-friendly.
Adult males display a rich golden-yellow body accentuated by red-orange highlights on the belly and fins, a black facial mask, and elongated dorsal fin rays. Females are slightly smaller with a more rounded abdomen and less pronounced fin extensions. Both sexes exhibit a black midlateral spot and subtle iridescent scaling under good lighting.
In the aquarium, Bolivian Rams are peaceful substrate-dwellers that spend most of their time exploring the lower half of the tank. They appreciate a soft sandy substrate where they can sift for food, along with caves, driftwood, and dense planting that mimics their natural habitat. Although territorial during spawning, they rarely cause serious harm to other fish.
Bolivian Rams are open or cave spawners. The female deposits eggs on a flat stone or in a shallow pit, and both parents guard the eggs and fry with notable dedication. Fry can be raised on baby brine shrimp and finely crushed flake food.
