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Brichard's Synodontis

Synodontis brichardi

Fishes › Catfish (Siluriformes) › Mochokidae (Synodontis and squeaker catfish)

Synodontis brichardi, known as Brichard's synodontis, is a species of upside-down catfish that is endemic to the Democratic Republic of the Congo where it occurs in the rapids of the lower Congo River.

Aquarium hobby
Experience: Intermediate
Brichard's Synodontis
Photo: Frank M. Greco, CC BY 3.0, via Wikimedia Commons
FamilySynodontis and squeaker catfish
Adult lengthup to 5.9 in
WaterFreshwater
HabitatLives in freshwater

Care at a glance

Species-specific aquarium care

  • Tank: At least 30 in long and 12 in front to back for one adult (adults commonly reach about 5.9 in / 15 cm).
  • Water: Freshwater.
  • Temperature: 72–77°F (range recorded for this species).
  • pH: 6–8.
  • Hardness: 5–19 dGH.
  • Layout: Uses both the bottom and open water: give open swimming space plus cover near the substrate.
  • Diet: A grazer on plants and algae: base the diet on vegetable foods (algae wafers, blanched vegetables, spirulina). FishBase classes it as a herbivore.
  • Availability: Rarely or never seen in the aquarium trade; expect to source it from specialists or not at all.

Calculated from this species' own FishBase record: tank size from its typical adult length and swimming zone, water values from its recorded ranges. The group guide below fills in general care.

Care guide

Species care notes

  • Tank: a base of at least 47 × 12 in (roughly 29 US gallons); space needed is rated “large tank”.
  • Water: a fairly wide range, from slightly acidic to slightly alkaline, 72–79 °F, pH 6.2–7.5, 5–20 dGH.
  • Behaviour: temperament peaceful.
  • Difficulty: Easy (Seriously Fish rating).

Short excerpts from the species profile:

  • Setup: “The aquarium should have a fine gravel or sand substrate and a scattering of smooth rocks of varying sizes.”
  • Diet: “Dried foods may be accepted but the ideal diet for S.”
  • Tankmates: “A peaceful species but should only be kept with fish that appreciate flowing, oxygenated water.”
  • Breeding: “Not reported to have bred in aquaria, although it has been bred for commercial purposes in Eastern Europe with the aid of hormone injections.”

From the Seriously Fish profile for this species, which has the full habitat, maintenance, diet, behaviour and breeding write-up 167

Group care guide

Synodontis and squeaker catfish

Applies to most species in this group. Habitat: African mochokids include Synodontis from vegetated riverbanks and distinct species from rocky habitats in the East African Rift lakes. Individual species can differ, so compare with the species numbers above and the linked sources.

The water range is sourced for S. nigriventris and S. petricola, not every mochokid. Rift-lake species require separate chemistry research rather than a universal soft-water river regime. Eupterus, decorus and nigrita should not inherit the small upside-down catfish tank size. Nigrita and other larger species are sometimes mis-sold as nigriventris. These sources do not establish individual adult housing dimensions for all the listed species, including multipunctatus, njassae and polli.

Housing & setup

  • For a small S. nigriventris group, provide at least 75 × 30 × 30 cm (30 × 12 × 12 in), about 70 litres; larger species need more space.
  • Use sand or another soft substrate to protect sensitive barbels.
  • Provide plentiful daytime shelters: wood and roots for river species, rock caves for Rift-lake species.
  • For S. nigriventris, use dim lighting and broad-leaved or floating vegetation with sheltered undersides for inverted resting.
  • Separate water-chemistry plans: S. nigriventris is listed at pH 6.0–7.5 and 5–20 dGH; S. petricola at pH 7.5–8.5 and 10–35 dGH.

Sources 895896897898

Climate & lighting

Water75–82°F

Sources 895896897898

Diet

  • Complete dried foods appropriate to adult size.
  • Live or frozen aquatic foods as part of an omnivorous diet.
  • Shelled peas or cucumber; S. nigriventris may also feed inverted at the surface.

Sources 895896897898

Social life

  • Keep S. nigriventris in groups of at least three or four and S. petricola in groups of four or more. Larger Synodontis can be territorial toward other catfish and eat small tankmates; provide separate shelters and ample space.

Sources 895896897898

Health watch

  • Barbel damage associated with abrasive substrate.
  • Ammonia-related illness in poorly maintained systems.
  • Nutritional deficiencies from an unbalanced diet.

Sources 895896897898

Understanding the animal

This species is part of a group that hobbyists, aviculturists or zoos keep widely (Synodontis and squeaker catfish), so it's included for completeness. It may be rare in captivity itself, or not kept at all. Use the group guide as a starting point and look for species-specific advice from experienced keepers.
About this animal

About this animal

It was first described by Max Poll in 1959. The original specimens were obtained from the rapids at Kinsuka, Kinshaa, Zaire.

Quoted from the Wikipedia article “Synodontis brichardi” (CC BY-SA 4.0) 174

In the wild

In the wild

From this species’ own FishBase record (habitat, bottom type, water and breeding data), not its family. Good care copies these conditions.1

Where it livesLives in freshwater, in rivers and streams. Uses both the bottom and open water. Feeds on filamentous green algae.
Water it lives inFreshwater, 72–77 °F (22–25 °C), pH 6–8, hardness 5–19 dH.
ClimateTropical climate.
Wild dietGrazing on aquatic plants.
Behavior to plan forBreeding: open water/substratum egg scatterers.

What this means for care

  • Keep water within its wild range, 72–77 °F.
  1. FishBase species summary: Synodontis brichardi
Native climate (measured)

Native climate (measured)

Warm-season highsabout 88°F (up to 89°F in the hottest sampled areas)
Cool-season lowsabout 64°F (down to 63°F in the coldest sampled areas)
Average temperature77–77°F across sampled records
Relative humidity77–77% on average (driest month about 71%)
Rainfallabout 1466 mm a year

Measured at 6 wild occurrence records sampled against WorldClim 2.1 climate data (1970–2000 averages). Air conditions in the range are ecological context, not enclosure settings: microhabitats such as burrows, leaf litter or basking rocks can be cooler, warmer or more humid.

From the sources

From the sources

Quoted from the matching sections of reputable sources for this exact species. Specialist databases are used first; Wikipedia (community-edited, CC BY-SA 4.0) only fills gaps. Other sources are short credited quotes.

OverviewSynodontis brichardi, known as Brichard's synodontis, is a species of upside-down catfish that is endemic to the Democratic Republic of the Congo where it occurs in the rapids of the lower Congo River. It was first described by Max Poll in 1959. The original specimens were obtained from the rapids at Kinsuka, Kinshaa, Zaire. The species name brichardi is named in honor of Pierre Brichard, an aquarium fish exporter who first discovered the fish. — Wikipedia (community-edited)
Where it livesHome ranges Population dynamics Growth parameters Max. ages / sizes Length-weight rel. Length-frequencies Mass conversion Recruitment Abundance Life cycle Reproduction Maturity Maturity/Gills rel. — FishBase
BehaviorIn the wild, the species occurs in the lower Congo River rapids. As a whole, species of Synodontis are omnivores, consuming insect larvae, algae, gastropods, bivalves, sponges, crustaceans, and the eggs of other fishes. The reproductive habits of most of the species of Synodontis are not known, beyond some instances of obtaining egg counts from gravid females. — Wikipedia (community-edited)
ReproductionDistinct pairing during breeding. — FishBase
Appearance and sizeLike all members of the genus Synodontis, S. brichardi has a strong, bony head capsule that extends back as far as the first spine of the dorsal fin. The head contains a distinct narrow, bony, external protrusion called a humeral process. The fish has three pairs of barbels. — Wikipedia (community-edited)
BiologyFeeds on filamentous green algae. — FishBase

Data and studies

The numbers

The numbers

Each bar is what one source reports. Where several sources weigh in, the dashed gold band marks their average.

Adult length

Average of sources5.9in
FishBase 1645.9
Seriously Fish species profiles 1675.9

Maximum recorded length. Measured as total length. Fish in home aquariums often stay smaller than wild records.

Water temperature

Average of sources72–78°F
FishBase 16472–77
Seriously Fish species profiles 16772–79

Range the species tolerates in nature; aim for the middle.

pH

Average of sources6.1–7.8
FishBase 1646–8
Seriously Fish species profiles 1676.2–7.5

Water hardness

Average of sources5–19.5dGH
FishBase 1645–19
Seriously Fish species profiles 1675–20

Minimum tank footprint

Reported47in
Seriously Fish species profiles 16747

Seriously Fish recommends a tank base of at least 47 × 12 in (about 29 US gallons).

Sources for this sheet

  1. FishBase (Froese & Pauly, eds.), version 24.07 Peer-reviewed researchThe global scientific database on fishes, maintained by a consortium of research institutions; every value is referenced.
  2. Seriously Fish species profiles Experienced keeper or breederLong-running aquarium reference written and peer-checked by experienced fishkeepers and ichthyologists; each profile covers habitat, tank size, water, diet, behaviour and breeding.
  3. Seriously Fish — synodontis nigriventris Experienced keeper or breederAdded in the 2026 source-checked care-guide review.
  4. Seriously Fish — synodontis petricola Experienced keeper or breederAdded in the 2026 source-checked care-guide review.
  5. Practical Fishkeeping — Frequently asked questions on Synodontis Experienced keeper or breederAdded in the 2026 source-checked care-guide review.
  6. Merck Veterinary Manual — Disorders and Diseases of Fish Zoo, university or veterinaryAdded in the 2026 source-checked care-guide review.
  7. Wikipedia (species article) Community referenceFree encyclopedia; useful overviews with their own citations. Intro text is quoted under CC BY-SA 4.0.