Description
Description
River Threadfin Paradiseus Catfish (Polydactylus macrophthalmus)
Overview
The River Threadfin Paradiseus Catfish is a distinctive freshwater catfish known for its elongated body, thread-like barbels, and large expressive eyes. This nocturnal, bottom-dwelling species is an intriguing addition to larger aquariums, showcasing unique behaviour and gentle predatory instincts.
Origin
Native to Southeast Asia, inhabiting rivers, streams, and estuaries with sandy or muddy substrates. Prefers areas with slow to moderate flow and ample hiding spots.
Feeding
Carnivorous. Feeds primarily at night on small fish, invertebrates, worms, and high-protein sinking pellets. A varied diet of live, frozen, and prepared foods ensures optimal health.
Tank Mates
Best kept with medium to large, non-aggressive fish. Avoid very small fish or shrimp, which may be eaten. Suitable companions include large tetras, barbs, peaceful cichlids, and other bottom dwellers of comparable size.
Aggression
Generally peaceful toward similar-sized tank mates, but territorial over substrate and feeding space. May prey on smaller fish.
Experience Level
Intermediate to advanced. Requires a large, well-maintained aquarium with soft substrate and stable water conditions.
Water Parameters
Temperature: 75°F – 82°F (24°C – 28°C)
pH: 6.5 – 7.5
Hardness: 5 – 15 dGH
Notes: Provide driftwood, rocks, and shaded areas for daytime hiding; nocturnal activity is normal.
Unique, fascinating, and hardy when established, the River Threadfin Paradiseus Catfish (Polydactylus macrophthalmus) is a rewarding species for aquarists seeking a nocturnal, bottom-dwelling centerpiece.
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