Asian Upside Catfish Mystus Leucophasis 5cm

Please check the delivery dates below before placing your order.

Overview:
The Asian Upside-Down Catfish (Mystus leucophasis) is a fascinating and unique species named for its habit of swimming belly-up, especially when feeding at the water’s surface or resting under driftwood. With its sleek, torpedo-shaped body, long barbels, and shimmering silver-to-dark coloration, this nocturnal oddball brings both character and movement to medium-to-large freshwater tanks.

Origin:
Native to Southeast Asia, particularly the Irrawaddy River basin in Myanmar, Mystus leucophasis inhabits slow-moving rivers, swamps, and flooded forests where it hunts at dusk and dawn.

Feeding:
An opportunistic omnivore, this catfish accepts a wide variety of foods including sinking pellets, bloodworms, brine shrimp, insect larvae, and frozen meaty foods. Will also feed near the surface—often upside down—making it a joy to watch during mealtimes.

Tank Mates:
Peaceful to semi-aggressive depending on size and environment. Best kept with similar-sized or larger peaceful fishsuch as gouramis, rainbowfish, larger barbs, loaches, or calm cichlids. Avoid small fish or shrimp, which may be mistaken for food.

Water Parameters:

• Temperature: 75–82°F (24–28°C)

• pH: 6.5–7.5

• Moderate hardness

• Minimum Tank Size: 55 gallons

• Provide plenty of driftwood, hiding spots, and dim lighting

Behavior & Compatibility:

• Nocturnal but may become more active in dim tanks

• Best kept in groups of 3 or more for natural schooling behavior

• Prefers low to moderate flow, subdued lighting, and soft substrate

Special Notes:

• Can grow up to 8–10 inches, so needs ample swimming space

• Extremely hardy once established

• Will thrive in planted or natural setups with cover and structure

• Captivating for aquarists who enjoy unusual behaviors and oddball species

The Asian Upside-Down Catfish is a mysterious, elegant, and intelligent species that adds motion and intrigue to any large freshwater aquarium. Its unique swimming style and peaceful temperament make it a standout choice for aquarists looking for something different.

Above images for illustration purposes only. Exact colours, patterns, and size may vary between individuals.

Please Note: The livestock that is sold on our online site is not held in store at our Swell shop, or available for collection from the shop. Species sold at our Swell store will differ from ones available to order to your door.

All livestock deliveries are subject to our full Delivery Terms & Conditions, please read before ordering.