Spotted Catfish

Geographical Origin and Habitat: Coastal estuaries, mangrove basins, and muddy river mouths in the Indo-West Pacific.

Taxonomy and Morphology: Family Ariidae. Robust, scaleless body with long whiskers. Sharp, venomous spines on the dorsal and pectoral fins. Reaches 30 cm.

Social Behavior: Shoaling species. Active swimmer that should be kept in a group of 3 or more to maintain social behavior.

Coloration and Sexual Dimorphism: Silvery-grey body with a golden luster, often marked with dark mottling. No visible dimorphism.

Aquarium Setup: Very large tank with soft sand to prevent barbel damage. Minimal rocks, prioritizing free benthic swimming space.

Diet and Feeding: Carnivorous. Feed whole krill, chopped mussels, prawns, and sinking pellets. Consumes large amounts of food.

Water Quality: High salinity brackish (SG 1.010+) or marine conditions are required for adults. Powerful biological filtration is essential.

Compatibility and Cohabitation: Ideal with large brackish fish.

Spines are venomous:; handle with care. Small fish will be eaten.

Aquarium Breeding: Paternal mouthbrooder. Males hold eggs in their mouth. Captive spawning has not been documented in aquaria.

Risks and Diseases: Envenomation risk from spines. Avoid using nets where spines can get tangled; use plastic containers to move them.