Upside-down catfish
Synodontis nigriventris
Care at a glance
- Temperature
- 75–82°F (24–28°C)
- pH
- 6.0–7.5
- Adult size
- 3.9 in (10 cm)
- Minimum tank
- 30 gal (115 L)
- Temperament
- Peaceful
- Social behavior
- Schooling
- Swim level
- Bottom
- Difficulty
- Beginner
- Breeding
- No record
- Rarity
- Rare
- Origin
- Congo Basin
- Family
- Mochokidae
Overview
Keep a group of at least five. They feel safer in numbers, and you will see them out more. They are bottom-oriented but will cruise upside down along the surface and under leaves and wood. They are peaceful and nocturnal, so feed after lights-out with sinking pellets, frozen bloodworms, and some plant matter. Plan on around 115 liters or more, and pair them with calm tankmates that share the same warm, soft water.
In the wild
This catfish comes from the slow, warm waters of the Congo Basin, where it hangs around submerged roots, branches, and thick plant cover. To match that, give it driftwood, caves, and some shade in the tank. Keep the water in the mid 20s C and the pH on the soft, slightly acidic to neutral side (around 6 to 7.5).
Good to know
It belongs to the Mochokidae family, the African upside-down catfishes, and tops out around 10 cm. Breeding in home tanks is rarely documented, so most fish in the trade are commercially raised. It can live well over a decade with good care. The common name comes from its habit of swimming belly-up, which is unusual among catfish.
Did you know
Its countershading is flipped compared to most fish. The belly is darker than the back, which makes sense because the fish spends so much time inverted. Seen from above, the dark belly blends with the bottom, and from below the lighter back blends with the bright surface.
Where to buy
Some links may not be the exact species or variety.
- Aquatic Arts Freshwater fish, shrimp and snails with an arrive-alive guarantee
- LiveAquaria Freshwater and saltwater fish, inverts and corals
- Imperial Tropicals Freshwater fish and inverts bred at a Florida hatchery
- Aqua Huna Freshwater fish, shrimp and plants with a three day live arrival guarantee
…or ask your local fish store.
Appears in
Freshwater fish · Beginner fish · Schooling fish · Community fish · Bottom dwellers
Keeping Upside-down catfish?
Track water tests, reminders and stocking fit.
Related species
Bugeye squeaker
Synodontis contractus3.9 in (10 cm)30 gal (114 L)72–79°F (22–26°C)Dwarf petricola
Synodontis lucipinnis3.9 in (10 cm)30 gal (114 L)73–81°F (23–27°C)
Even-Spotted squeaker
Synodontis petricola4.7 in (12 cm)45 gal (170 L)75–82°F (24–28°C)Pyjama synodontis
Synodontis flavitaeniatus7.1 in (18 cm)53 gal (200 L)75–81°F (24–27°C)
Cuckoo squeaker
Synodontis multipunctatus9.8 in (25 cm)50 gal (190 L)75–82°F (24–28°C)
Vermiculated squeaker
Synodontis schoutedeni5.9 in (15 cm)24 gal (90 L)72–81°F (22–27°C)
