The Bolivian Ram (Mikrogeophagus altispinosus), also known as the Bolivian Butterfly Cichlid or Ruby Clown Cichlid, is one of the hardiest, most peaceful dwarf cichlids available for the freshwater community aquarium.Renowned for its subtle pastel hues, ruby-rimmed fins, and curious personality, the Bolivian Ram offers all the charm and intelligence of South American cichlids without the aggressive territorial behavior.

Origin & Natural Habitat

Bolivian Rams are native to South America, predominantly found in the Rio Guaporé, Rio Mamoré, and Rio Madeira river basins throughout Bolivia and southwestern Brazil. In nature, they inhabit slow-moving streams, flooded river margins, and oxbow lakes characterized by sandy or silty substrate, leaf litter, and overhanging vegetation.

Tank Size & Water Parameters

Bolivian Rams are significantly hardier and more adaptable than their cousin, the German Blue Ram, making them suitable for beginners and experienced hobbyists alike.

• Minimum Tank Size: 20 gallons (approx. 75 liters) for a single specimen or a bonded pair; 30+ gallons for a small group or community setup.

• Water Temperature: 74°F – 82°F (23°C – 28°C)

• pH Range: 6.5 – 7.5 (tolerates up to 7.8)

• Water Hardness: 5 – 12 dGH (soft to moderately hard)

• Flow Rate: Low to moderate water circulation

Environment & Aquascape Setup

To help your Bolivian Ram thrive and showcase its best colors, design an environment that mimics its natural biotope:

• Substrate: Fine aquarium sand is highly recommended. Bolivian Rams are benthophagous ("sand-sifters") and love to mouth the substrate searching for micro-crustaceans and food morsels. Rough, sharp gravel can damage their gills.

• Decor & Plants: Provide ample cover using natural driftwood branches, smooth river rocks, and ceramic caves or overturned terracotta pots to establish territories. They do exceptionally well in planted tanks—sturdy plants like Anubias, Java Fern, Cryptocoryne, and Amazon Swords provide shade and security.

• Lighting: Subdued or moderate lighting, optionally diffused by floating plants.

Diet & Feeding

Bolivian Rams are omnivorous micro-predators. They readily accept most commercial aquarium foods but thrive on a varied, high-protein diet:

• High-quality sinking micro-pellets and spirulina-rich flakes.

• Live or frozen offerings such as baby brine shrimp, daphnia, cyclops, and bloodworms.

• Regular feedings 1–2 times daily in small amounts that sink to the bottom where they naturally forage.

Ideal Community Tank Mates

Thanks to their docile temperament, Bolivian Rams are quintessential community fish. They dwell primarily in the lower third of the aquarium and rarely bother mid- or top-dwelling species.

• Excellent Tank Mates: Peaceful schooling tetras (Rummy Nose, Cardinal, Neon, Lemon, Diamond Tetras),Rasboras, Hatchetfish, peaceful Corydoras catfish, Otocinclus, Bristlenose Plecos, and peaceful dwarf gouramis.

• Species to Avoid: Aggressive or large cichlids (Oscars, Jack Dempseys, Green Terrors), fin-nippers, and overly boisterous bottom dwellers that may outcompete them for food.

Breeding & Sexing

Bolivian Rams are open-substrate (biparental) spawners that form monogamous pair bonds.

• Sexing: Males are slightly larger with pointed dorsal and anal fin extensions and more elongated tail filaments.Females tend to be slightly rounder with a pinkish flush on the belly when in breeding condition.

• Breeding Behavior: The bonded pair will clean a flat rock, broad leaf, or pit in the sand before laying 100 to 250 eggs. Both parents attentively guard the eggs and fry, fanning the clutch and herding the free-swimming fry.Newly hatched fry accept freshly hatched baby brine shrimp and liquid fry food.