Actinopterygii (ray-finned fishes) > Siluriformes
(Catfish) > Mochokidae
(Squeakers or upside-down catfishes)
Etymology: Synodontis: Greek, syn, symphysis = grown together + Greek, odous = teeth (Ref. 45335). More on author: Peters.
Environment / Climate / Range
Freshwater; benthopelagic. Tropical, preferred ?; 13°S - 27°S
Africa: Middle and lower Zambezi south to the Pongolo system (Ref. 7248). Absent from upper Save-Runde system (Ref. 7248). Also reported from the Luangwe (upper Congo River basin)(Ref. 58032), but specimens identified as S. rukwaensis in Ref. 82238; needs confirmation.
Length at first maturity / Size / Weight / Age
Maturity: Lm 15.0  range ? - ? cm
Max length : 43.0 cm SL male/unsexed; (Ref. 7248); max. published weight: 820.00 g (Ref. 7248)
The spines are said to be poisonous (Ref. 4537). Occurs in pools and slow flowing reaches of perennial and seasonal rivers. Favors riverine habitats to floodplains. Shelters in holes or crevices or on the underside of logs, frequently in an upside-down position. Active at night, feeds on detritus and plant matter such as seeds as well as small invertebrates like insects and snails. Will scavenge readily. Oviparous (Ref. 205). Breeds in summer (Ref. 7248).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Oviparous (Ref. 205). Distinct pairing during breeding (Ref. 205).
Gosse, J.-P., 1986. Mochokidae. p. 105-152. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels, MRAC, Tervuren; and ORSTOM, Paris. Vol. 2. (Ref. 3202)
IUCN Red List Status (Ref. 109396)
CITES (Ref. 94142)
Fisheries: minor commercial; gamefish: yes
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00891 (0.00425 - 0.01868), b=3.13 (2.93 - 3.33), based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic Level (Ref. 69278
): 2.7 ±0.34 se; Based on food items.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Moderate to high vulnerability (46 of 100) .