Description
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.
OriginNative to Southeast Asia, inhabiting rivers, streams, and estuaries with sandy or muddy substrates. Prefers areas with slow to moderate flow and ample hiding spots.
FeedingCarnivorous. 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 MatesBest 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.
AggressionGenerally peaceful toward similar-sized tank mates, but territorial over substrate and feeding space. May prey on smaller fish.
Experience LevelIntermediate 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.
DX courier delivery is £20 per livestock order.
Delivery is scheduled for your selected delivery date and typically arrives before 1pm.
There is no minimum or maximum order value.
Additional information:
- In-stock livestock orders will be processed and dispatched for delivery on the date selected on the cart/basket page.
- Available delivery days are Wednesday, Thursday, Friday, and Saturday.
- If any stock issues affect your chosen delivery date, we will contact you as soon as possible by email or telephone.
- Shipping for dry goods is charged separately from livestock delivery. Dry goods are dispatched according to our standard delivery policy.
- All livestock remains covered by our 7-day guarantee.

