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Species profile

Asian Upside Down Catfish

Mystus leucophasis

Common names: Asian Upside Down Catfish, Sittang Mystus, Upside-Down Catfish

Recognized speciesCatfish

Adult size

Up to 30 cm

Up to 30 cm

Countries of origin

  • See all stock from Myanmar

Good fit for your tank?

Good fit for

  • A keeper with room for a large aquarium

Think carefully if

  • You cannot provide about 432 litres for a fully grown fish
  • You keep shrimp you want to protect

A dark catfish that spends nearly all its time swimming upside down, like some African Synodontis. Keep alone or in a small group in 432 litres or more.

Appearance and Identification

A dark catfish that spends nearly all its time swimming upside down, like some African Synodontis. It is often sold small, but it grows to about 30 cm, and it can fight with its own kind.

Check the scientific name when buying, as common names vary between sellers and countries.

Sexes can be hard to tell apart, although females are often rounder.

Tank Requirements

Suggested filter
About 860–1,300 litres an hour
Suggested heater
About 425–650 W for this tank
Minimum tank volume
432 litres
Minimum tank length
120 cm
Minimum group size
1
Recommended group size
1
Activity level
Low
Flow preference
Low
Planting preference
Moderately planted
Hiding places
Yes
Lid recommended
Yes
Jumping risk
Moderate

Provide caves, wood and shade, because many catfish are active mostly at night.

Behaviour and Tankmates

Usually most active at dusk and after dark, and it hides during the day.

Social needs vary, so see the notes for this species.

Can defend a favourite hiding place.

Check adult size before choosing tankmates, because a catfish may eat anything that fits in its mouth at night. It is likely to eat shrimp.

Check tankmates for this species

Water Parameters

Temperature
23–27 °C
pH
6–8
GH
5–20
Stability importance
Important

Fairly tolerant of different water, if it is clean and stable. Keep the temperature steady.

Parameter caveat
Keep up regular water changes, and acclimatise new fish slowly.

Feeding

Diet types
Omnivore
Feeding frequency
Daily
Preferred foods
  • Sinking pellets or wafersFeed after lights-out if faster fish take everything first.
  • Frozen bloodworm and brine shrimpOffer several times a week.
  • Blanched vegetablesCourgette or cucumber add variety for fish that graze.

Feed sinking foods, ideally after lights-out, so that it gets its share.

Feed small amounts, and remove anything left after a few minutes.

Breeding

Breeding difficulty
Not commonly bred
Parental care
Unknown

Little has been recorded about breeding this fish in aquariums.

Habitat and Origin

Geographic origin
Myanmar, Southeast Asia
Natural habitat
River
Aquarium contexts
Large Freshwater Aquarium, Planted Aquarium
Audience level
Advanced

Classification

Profile type
Recognized species
Genus
Mystus
Family
Bagridae
Species group
Catfish, Fish, Other Catfish

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