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The Pseudoplatystoma fasciatum, also known as the Tiger Shovelnose Catfish, is a large predatory catfish from South America. Its elongated body, flattened head, and pattern of dark vertical bands make it immediately recognizable. It occurs in several major river basins, where it usually inhabits calm areas, deep channels, and sections filled with submerged wood. Very common in the specialized aquarium trade, it is nevertheless suitable only for extremely large systems. Its growth, appetite, and adult size require serious planning before purchase, especially for aquarists in Quebec. Proper space, filtration, and compatible tankmates are essential for long-term success.

General species description

The Pseudoplatystoma fasciatum is a large siluriform fish belonging to the family Pimelodidae. Its streamlined body and broad mouth reflect an ambush-predator lifestyle. It often remains close to the bottom, where its barbels help detect prey when visibility is poor. The species is most active at dusk and during the night. In an aquarium, it may appear calm, but it will swallow any fish small enough to fit into its mouth. It is common in the specialized trade, although that does not make it easy to keep. A suitable aquarium must prioritize length, floor space, strong filtration, and sturdy hiding places.

Geographic origin and biotope

This species is native to several South American freshwater basins, particularly areas associated with the Amazon and Orinoco; Colombia is part of its reference range. It inhabits main channels, side channels, connected lagoons, and quiet areas close to the banks. Water may be clear, stained, or sediment-rich depending on the basin and season. The habitat commonly includes submerged logs, roots, wooded banks, and debris piles that provide shelter. Seasonal flooding can greatly change water depth, current strength, and prey availability.

Precise location and local name

In Colombia, the Pseudoplatystoma fasciatum is generally associated with large lowland river systems and is commonly known by the local name bagre rayado. The name pintadillo rayado is also used in some regions for striped catfish belonging to the genus Pseudoplatystoma. Vernacular names may vary between basins and can be shared with closely related species. In international trade, the English name Tiger Shovelnose Catfish is more consistent. To avoid confusion, identification should rely on coloration, head shape, banding pattern, and the stated collection region.

Appearance and physical characteristics

The body is silvery to pale gray, with several dark transverse bands extending from the flanks toward the belly. The head is broad and flattened, and the mouth bears long sensory barbels. The caudal fin is forked and the caudal peduncle is powerful, allowing rapid acceleration. The pectoral and dorsal fins have stiff spines that can cause injuries during handling. Its overall shape resembles a shovel, which explains part of its common name. An adult may reach approximately 120 cm in total length, although aquarium specimens are usually smaller.

General diet

The Pseudoplatystoma fasciatum is primarily piscivorous. In nature, it eats fish and may also capture crustaceans or other available aquatic animals. In captivity, it accepts appropriately sized meaty foods such as fish pieces, shrimp, and high-quality sinking preparations. Feeder fish from uncertain sources should be avoided because they may introduce parasites or create an unbalanced diet. Meals should remain proportionate, as overfeeding quickly increases the organic load. Its hunting strategy relies on the rapid suction of prey; any tankmate small enough to swallow will be treated as food.

Essential data

• Native river name: Amazon and Orinoco river basins
• Local name used: Bagre rayado; pintadillo rayado
• Origin of the scientific name: A name formed from Greek and Latin roots
• Full-name etymology: Pseudoplatystoma means “false broad mouth”; fasciatum means “banded” or “marked with bands”
• Common/vernacular names: Tiger Shovelnose Catfish; bagre rayado; pintadillo rayado
• Family: Pimelodidae
• Subfamily: Pimelodinae
• Name pronunciation: soo-doh-plat-ih-STOH-mah fah-see-AH-tum
• Discovery: Carl Linnaeus, 1766
• Maximum adult size: Approximately 120 cm
• Water temperature and pH: 24 to 28 °C; approximately pH 6.0 to 7.5
• Watercourse appearance and surrounding vegetation: Channels, quiet side waters, and wooded banks; roots, logs, and riverside vegetation
• Typical tankmates: Phractocephalus hemioliopterus, Astronotus ocellatus, Cichla temensis, Oxydoras niger
• Temperament and behavior: Predatory, generally calm toward fish too large to swallow; mainly active at dusk and at night
• Water depth: Medium to deep areas of channels and quiet side waters
• Sexual dimorphism: Limited and difficult to identify visually in young fish
• Bottom structure and flow: Sandy or muddy bottom, woody debris, and slow to moderate current

In your aquarium

Keeping the Pseudoplatystoma fasciatum requires an extremely large aquarium with substantial floor space, secure covers, and filtration capable of handling heavy waste production. The layout should leave open swimming areas while providing shelters without sharp edges. Stable, well-oxygenated water with low waste levels is essential. Tankmates must be robust and too large to swallow. With controlled feeding and regular water changes, this species can become an impressive display fish, but its adult size must guide the decision from the beginning. Planning for its full growth is the most important step toward responsible ownership.