The Tigrinus Catfish, scientifically known as Pseudoplatystoma tigrinum, is a large and distinctive catfish species native to South America. Here's some information about their care and lifestyle:

1. Appearance:

   • The Tigrinus Catfish has a striking appearance with a distinctive pattern of black stripes or spots on a silvery or golden background.
   • It has a long and sleek body, typical of the Pimelodidae family.

2. Size:

   • Tigrinus Catfish can grow quite large, reaching lengths of up to 3 feet (90 cm) or more in the wild.

3. Habitat:

   • They are native to the Amazon River basin and its tributaries, where they inhabit larger rivers and flooded areas during the rainy season.

4. Tank Setup:

   • Due to their large size, Tigrinus Catfish are only suitable for very large aquariums or custom-built tanks.
   • Provide a spacious tank with hiding spots such as caves, large PVC pipes, or other structures.
   • A powerful filtration system and regular water changes are essential to maintain water quality.

5. Diet:

   • Tigrinus Catfish are carnivorous and primarily feed on fish and other meaty foods in the wild.
   • In captivity, offer a diet consisting of high-quality pellets, frozen or live fish, shrimp, and other protein-rich foods.

6. Behavior:

   • They are generally nocturnal, and their behavior can be somewhat secretive.
   • Tigrinus Catfish are predatory, and tank mates should be chosen carefully to avoid aggression or predation.

7. Tank Mates:

   • Due to their predatory nature and potential size, it's best to keep Tigrinus Catfish with large, robust tank mates.
   • Avoid keeping them with smaller fish that might be viewed as potential prey.

8. Water Parameters:

   • Maintain water conditions similar to their natural habitat, with a temperature range of 75°F to 82°F (24°C to 28°C), pH around 6.0 to 7.5, and soft to moderately hard water.

9. Breeding:

   • Breeding Tigrinus Catfish in captivity is challenging and not commonly achieved in home aquariums.
   • Successful breeding may require large tanks with specific conditions mimicking their natural habitat.

10. Caution:

    • Tigrinus Catfish are not recommended for inexperienced aquarists due to their size, specific care requirements, and predatory nature.
    • Some countries or regions may have regulations regarding the ownership of large or potentially invasive species, so be sure to check local laws and regulations before acquiring one.