The Walking Catfish is a hardy, nocturnal fish known for its unique ability to travel on land and adapt to a range of aquatic conditions.
Overview
The Walking Catfish (Clarias batrachus) is a unique freshwater fish native to Southeast Asia, known for its ability to move short distances on land using its pectoral fins. Its adaptability and hardiness allow it to survive in various conditions, making it a resilient species for experienced aquarists. The fish has a slender, elongated body and is usually gray or brown with mottled spots, making it well-camouflaged in its environment.
Tank Requirements
Walking Catfish require a spacious tank of at least 200 liters due to their size and active nature. The water temperature should be kept between 22-28°C with a pH of 6.5-8.0 and a general hardness (GH) of 5-20. This species prefers a dimly lit tank with plenty of hiding spots, such as driftwood, caves, and dense vegetation. A secure tank lid is essential, as these fish are known to escape in search of food or better conditions.
Feeding and Diet
In the wild, Walking Catfish are omnivorous and consume a variety of plant matter, insects, small fish, and crustaceans. In an aquarium, they thrive on a balanced diet of sinking pellets, live or frozen foods like bloodworms and shrimp, and occasional vegetables. Feeding should occur in the evening to suit their nocturnal habits.
Care and Maintenance
Maintaining water quality is crucial, as these fish produce a significant amount of waste. Weekly water changes of 25-30% and a strong filtration system are recommended. While the Walking Catfish can tolerate low oxygen levels, ensuring proper aeration and filtration is essential for a healthy environment.
Compatibility
Walking Catfish are semi-aggressive and territorial, especially as they grow. Suitable tank mates include larger, similarly robust fish, such as large cichlids or other catfish species. Avoid housing them with small or delicate species, as they may be injured or outcompeted for food.
Breeding
Breeding Walking Catfish in captivity is challenging due to their specific requirements. They build bubble nests in shallow water, where the male guards the eggs. Reproducing this environment in an aquarium is difficult, but success has been achieved in spacious tanks with controlled conditions. Once the eggs hatch, the fry should be separated to prevent predation by adults.