Pterophyllum altum - majestic

Pterophyllum altum, commonly known as Altum , is a species of freshwater fish belonging to the family Cichlidae. It is native to the Orinoco River basin in South America, particularly in the countries of Colombia, Venezuela, and Brazil. Here is some comprehensive information about Pterophyllum altum:

Pterophyllum altum is a graceful and beautiful fish with a laterally flattened body, a high dorsal fin and long anal and pelvic fins. It has a deep body that is silver to gold in color. A characteristic feature of this species is the long, triangular dorsal and anal fins that extend vertically and can reach half the height of the fish. The dorsal and anal fins have a black stripe running along the base. The fish also has three vertical black stripes on the body.

Size:

Altumas are relatively larger compared to other angelfish species. They can grow up to 15-20 centimetres (6-8 inches) long and have a height of around 25-30 centimetres (10-12 inches).

Behavior and temperament:

Pterophyllum altum is known for its shy and somewhat skittish nature. They tend to be more sensitive and easily stressed compared to their closely related species, Pterophyllum scalare (common angelfish). Therefore, it is recommended to keep them in a calm and well-established aquarium with minimal disturbances. They are best kept in small groups or pairs, as they are social fish and feel safer in the presence of their own kind.

Aquarium requirements:

To provide a suitable environment for Altums, the following aquarium requirements should be considered:

Tank Size: A spacious aquarium is essential for Altums. Ideally, a tank of at least 200 liters (50 gallons) or more is recommended to accommodate their size and swimming habits, preferably a minimum of 60cm high.

Water Parameters: Altumas prefer warm, acidic and soft water, similar to their natural environment. Ideal temperature range is 25-29°C (77-84°F), pH level 5.5-6.5 and hardness 1-5 dH, breeding individuals already bred in aquarium conditions are more tolerant and live peacefully in higher pH and hardness.

Filtration and Water Flow: A good filtration system is essential to maintaining water quality. Altumas appreciate gentle water movement, so it is advisable to use a filter that does not cause strong currents.

Décor and Plants: Provide a well-planted aquarium with plenty of hiding places and open areas for swimming. Use driftwood, rocks, and plants to create a natural environment, simulating their native habitat.

Tankmates: Choose tankmates carefully that are compatible with Altumi. Avoid aggressive or overly active fish that may stress or harass them. Peaceful species such as tetras, corydoras catfish, and other angelfish may be suitable tankmates.

Diet:

In their natural habitat, Altumas feed mainly on small aquatic invertebrates, insects and larvae. In captivity, they can be fed a varied diet consisting of high-quality flake or pellet food designed for omnivorous cichlids. It is also beneficial to supplement their diet with live or frozen foods such as earthworms, brine shrimp and small insects to provide the necessary nutrients. Premium Daily Food and especially Gold Angelfish are great options

Breeding:

Breeding Altums can be difficult due to their sensitivity and specific requirements. They are substrate spawners, meaning they lay their eggs on a flat surface such as a leaf or slate. The parents watch over and fan the eggs to ensure adequate oxygenation. The eggs hatch in about 48-72 hours, and the parents continue to care for the fry until they are free swimming.

It is worth noting that due to the sensitive nature and limited availability of Pterophyllum altum, they are relatively rare in the aquarium trade compared to the more readily available Pterophyllum scalare. Proper research, preparation, and care are key when considering keeping this species.

Remember to always consult experienced aquarists or fish experts for specific advice on the care and breeding of Altums to ensure their well-being in captivity.