Altum Angel (Pterophyllum altum)

The Altum Angel (Pterophyllum altum), specifically the True Wild Strain, is a highly prized species of freshwater angelfish that originates from the Orinoco and Rio Negro river basins in South America. Known for its distinctive body shape, larger size, and unique wild beauty, the Altum Angel is often considered the most majestic and challenging of the angelfish species. Unlike the more commonly available Pterophyllum scalare, the Altum Angel has unique features that make it particularly sought after by experienced aquarists who are drawn to its wild lineage and elegant appearance.

Physical Characteristics:

• Size: The Altum Angel can grow up to 18-25 cm (7-10 inches) in height from top fin to bottom fin and about 15 cm (6 inches) in length.
• Body Shape: Altum Angels have a tall, laterally compressed body and a longer, pointed snout.
• Coloration: Wild Altum Angels display a silver or light brown body with vertical dark bands, with the possibility of a reddish tint around the head and gill area as they age.
• Fins: The dorsal and anal fins are long, creating a graceful, triangular silhouette. The ventral fins are thread-like, adding to their delicate appearance.

Behavior:

• Temperament: Generally peaceful but territorial when breeding.
• Social Behavior: Social fish that do well in groups of 5-6 individuals. Require ample space for vertical swimming.
• Shy Nature: Wild-caught Altum Angels are delicate and shy, needing a calm environment to thrive.

Aquarium Care:

• Tank Size: A minimum of 300 liters (80 gallons) with a height of 60 cm (24 inches) is recommended for a small group.
• Water Parameters: Ideal temperature range is 26°C to 30°C (79°F to 86°F), with a pH range of 4.5 to 6.5, and soft water hardness of 1-5 dGH.
• Tank Setup: Provide a soft, sandy substrate with plenty of driftwood, live plants, and subdued lighting. Gentle water flow and regular water changes are necessary.

Diet:

Altum Angels are omnivorous. Their diet in captivity should include:

• Pellets or Flakes: High-quality angelfish pellets or flakes.
• Live or Frozen Foods: Brine shrimp, bloodworms, daphnia, and blackworms.
• Vegetable Matter: Occasional spirulina flakes or blanched vegetables.

Tankmates:

• Suitable tankmates include peaceful cichlids like Discus or Dwarf Cichlids, schooling fish like Tetras, and bottom-dwellers like Corydoras or Plecos.
• Avoid aggressive or fin-nipping species.

Breeding:

• Maturation: Altum Angels mature around 18 months to 2 years.
• Breeding Setup: A separate breeding tank with soft, acidic water and subdued lighting is necessary.
• Spawning Behavior: Monogamous, with both parents guarding the eggs and fry.

Special Considerations:

• Water Sensitivity: True wild Altum Angels are particularly sensitive to water conditions.
• Shy Behavior: Wild-caught and may take time to acclimate.
• Cost and Availability: Due to their difficulty in being captured and transported, they are more expensive and less available than domesticated varieties.

Conclusion:

The True Wild Strain Altum Angel is a stunning and majestic fish that requires a high level of care and attention to thrive in captivity. Their tall, elegant bodies, natural coloration, and graceful swimming patterns make them a focal point in any aquarium. However, due to their specific water requirements and sensitivity to water quality, they are best suited for experienced aquarists. With proper care, Altum Angels can live for up to 10-15 years, offering a long-lasting and rewarding experience.