Silver Tiger fish

The silver tiger fish, also known as the four-banded tiger perch or silver datnoid, is an impressive large predatory fish from coastal Southeast Asia and Oceania. Its distribution extends from eastern India and Bangladesh through Myanmar, Thailand, Cambodia, Vietnam, Malaysia, and Indonesia to Papua New Guinea. It inhabits river mouths, estuaries, coastal lagoons, and mangrove swamps — brackish environments where freshwater meets the sea. Adults reach 30 cm (12 inches) in standard length and display a striking silver body with four bold black vertical bars, a high dorsal fin, and a distinctive concave forehead profile. The species is also known from freshwater habitats further inland, demonstrating remarkable osmoregulatory adaptability.

This is a territorial, semi-aggressive predator that requires spacious accommodation — a single adult needs a minimum of 650 litres with a length of at least 180 cm. Juveniles can be maintained in groups, but as they mature they become increasingly intolerant of conspecifics and should ideally be kept singly. The aquarium should be decorated with driftwood, large rocks, and robust planting, leaving open swimming space in the middle. Brackish conditions (SG 1.005-1.010) are recommended for long-term health, though the species adapts to freshwater with careful acclimation. Efficient filtration, strong water movement, and regular large water changes are essential to manage the heavy bioload.

Water parameters should be 20-28°C, pH 7.5-9.0, with hard, alkaline conditions. The diet is carnivorous: juveniles take bloodworm, small earthworms, and chopped prawn, while adults require whole prawns, mussel meat, strips of fish flesh, and river shrimp. They can be trained onto sinking carnivore pellets but often refuse dried foods. Mammalian meats such as beef heart and feeder goldfish should be avoided due to their poor nutritional profile. The silver tiger fish is a challenging, advanced-level species suited to experienced keepers with the space, filtration capacity, and commitment to brackish water management that its long-term care demands.