Un peu plus d'informations...

Hoplisoma paleatus is a small South American catfish valued for its sturdy shape, speckled pattern, and peaceful behavior. This long-finned form, sold as Peppered LongFin, retains the qualities sought in the standard species: strong social behavior and constant activity near the bottom. Native to waterways of the Plata basin, it prefers living in groups over a soft substrate. The specimens offered here are collected from the wild, making careful acclimation and a well-structured aquarium especially important. Its rarity rating is 1 out of 3, meaning very common.

General species description

Hoplisoma paleatus is a small gregarious callichthyid, usually best kept in a group of at least six individuals. It spends much of its time inspecting the bottom, but regularly rises to the surface to gulp atmospheric air through its intestinal respiration. Its peaceful behavior makes it suitable for a community aquarium with calm tank mates. Sensitive barbels help it locate food in the substrate. The LongFin form has more developed fins than the standard form, so sharp decorations and excessively strong currents should be avoided. Well-oxygenated water, regular maintenance, and a non-abrasive bottom are essential for its well-being.

Geographical origin and biotope

Hoplisoma paleatus comes from the Río de la Plata basin, mainly in Argentina, Brazil, and Uruguay. It inhabits rivers, small tributaries, seasonally flooded areas, and lowland sections where the current is slow to moderate. The water may be clear or slightly stained, with temperatures that can be cooler than those preferred by many tropical fish. In nature, it stays mostly near the bottom, in sandy or muddy areas where organic debris collects. The offered specimens are wild collected; gradual acclimation and close observation are therefore recommended. In an aquarium, moderate temperatures and strong oxygenation better reflect its natural environment.

Precise location and local name

The natural range includes areas of the Río de la Plata and its tributaries in southern Brazil, Uruguay, and northeastern Argentina. The species is associated with the Uruguay and Paraná river systems, as well as several coastal waterways in this region. In the aquarium trade, it is commonly called Peppered Cory, Peppered Catfish, or Peppered LongFin. In several Spanish-speaking regions, tachuela is also used for catfish of this type. The name Peppered LongFin describes the speckled pattern and elongated fins of the commercial variety. These trade names do not replace scientific identification, which is particularly useful when comparing different populations or captive-bred lines.

Appearance and physical characteristics

The body is stocky, slightly flattened along the belly, and protected by two rows of bony plates. The base color ranges from grayish beige to olive brown, with irregular spots forming a distinctive peppered pattern. The head has three pairs of barbels, while the pectoral and dorsal fins contain spiny rays that can cause a prick when the fish is handled. The Peppered LongFin form has longer, more flowing fins, especially in adults. Maximum observed length is generally around 7 cm, with females often larger and broader than males. Color becomes stronger when the fish is in good condition and kept over a natural-looking substrate.

General diet

Hoplisoma paleatus is a benthic omnivore that searches the bottom for small prey, larvae, worms, tiny crustaceans, and organic debris. In aquariums, it readily accepts quality sinking tablets, bottom-feeder pellets, and frozen foods such as brine shrimp or bloodworms. A portion of protein-rich foods supports growth and adult condition, particularly before spawning. Food should be offered after the lights have dimmed so bottom-dwelling fish can feed without excessive competition. Uneaten food should be removed because this species does not replace aquarium maintenance and should not be treated as a simple cleaner fish.

Essential data

• Native river name: Río de la Plata drainage, especially the Paraná and Uruguay basins
• Local name used: tachuela; Peppered Cory
• Origin of the scientific name: described under the genus Corydoras and now placed in Hoplisoma
• Full-name etymology: Hoplisoma comes from Greek hoplon, weapon or armor, and soma, body; paleatus comes from Latin and means clothed or covered
• Common/vernacular names: Peppered LongFin, Peppered Cory, Peppered Catfish
• Family: Callichthyidae
• Subfamily: Callichthyinae
• Name pronunciation: hop-lih-SO-ma pa-lee-A-tus
• Discovery: Leonard Jenyns, 1842
• Maximum adult size: approximately 7 cm
• Water temperature and pH: 18 to 26 °C; pH 6.0 to 8.0
• Stream appearance and surrounding vegetation: slow to moderately flowing water, lowland banks, and variable aquatic and marginal vegetation
• Typical tank mates: Gymnogeophagus balzanii, Psalidodon anisitsi, Hoplisoma panda
• Temperament and behavior: peaceful, social, active near the bottom; occasionally gulps air at the surface
• Water depth: shallow to medium-depth sections of waterways and floodplains
• Sexual dimorphism: female usually larger and broader; male slimmer
• Bottom structure and flow: fine sand or mud, plant debris, and low to moderate current

In your aquarium

To succeed with Hoplisoma paleatus, provide a group, fine sand, and open areas for foraging. Keep the water stable, well filtered, and well oxygenated, without waste accumulating on the bottom. This variety’s long fins require smooth decorations and careful handling. A varied sinking diet, offered regularly, completes attentive husbandry. The combination of a non-abrasive substrate, group living, and stable parameters will generally produce active, well-colored, long-lived fish.