Two-spot catfish
Mystus bimaculatus
Also known as Two-spot mystus, Pyjama mystus
Care at a glance
- Temperature
- 72–81°F (22–27°C)
- pH
- 6.0–7.5
- Adult size
- 4.7 in (12 cm)
- Minimum tank
- 30 gal (114 L)
- Temperament
- Peaceful
- Social behavior
- Social
- Swim level
- Bottom
- Difficulty
- Easy
- Breeding
- No record
- Rarity
- Common
- Origin
- Native to Sumatra and Borneo in Southeast Asia.
- Family
- Bagridae
Overview
The two-spot is an easy, peaceful catfish that stays small and does best in a group of five or more, where it is far more active and confident. It suits a soft-water community with tetras, rasboras, and other calm fish, and mostly ignores tankmates, though it may snap up the tiniest fry. Feed sinking pellets, frozen bloodworm, and other small meaty foods. A group is comfortable in a tank around 114 liters with wood and shade.
In the wild
The two-spot catfish comes from soft, slightly acidic, often tannin-stained streams of Sumatra and Borneo, foraging over the bottom among wood and leaf litter. It is most active in low light and shelters in cover by day. Give it soft sand, driftwood, floating plants for shade, and gentle flow at 22 to 27 degrees C with a pH of 6.0 to 7.5.
Good to know
Mystus bimaculatus is a small bagrid reaching about 12 cm, with a reddish to pinkish body, one dark spot on the shoulder and another on the tail base, and long slender barbels. It is a gregarious, shoaling catfish, unusual among the often more solitary bagrids. Breeding is not documented in aquariums.
Did you know
Unlike most bagrid catfish, which prefer to go it alone, this little species is a true shoaler and looks its best moving through the tank in a loose group.
Where to buy
Some links may not be the exact species or variety.
- Dan's Fish Freshwater fish, shrimp and snails with a live arrival guarantee
- The Wet Spot Tropical Fish Large freshwater selection from a longtime Portland fish store
…or ask your local fish store.
Appears in
Freshwater fish · Beginner fish · Community fish · Bottom dwellers
Keeping Two-spot catfish?
Track water tests, reminders and stocking fit.
Related species

Striped mystus
Mystus vittatus8.3 in (21 cm)60 gal (227 L)72–82°F (22–28°C)Asian upside-down catfish
Mystus leucophasis11.8 in (30 cm)50 gal (190 L)72–79°F (22–26°C)
Dwarf bumblebee catfish
Pseudomystus leiacanthus2.4 in (6 cm)20 gal (75 L)70–77°F (21–25°C)Asian bumblebee catfish
Pseudomystus siamensis5.9 in (15 cm)30 gal (115 L)68–79°F (20–26°C)Black lancer catfish
Bagrichthys macracanthus9.1 in (23 cm)55 gal (210 L)75–82°F (24–28°C)Harlequin lancer catfish
Bagroides melapterus11.8 in (30 cm)120 gal (455 L)75–81°F (24–27°C)