Actinopterygii (ray-finned fishes) > Siluriformes
(Catfish) > Mochokidae
(Squeakers or upside-down catfishes)
Etymology: Synodontis: Greek, syn, symphysis = grown together + Greek, odous = teeth (Ref. 45335).
Environment / Climate / Range
Freshwater; benthopelagic. Tropical
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 34.2 cm TL male/unsexed; (Ref. 3202)
Morphology | Morphometrics
soft rays: 13. Maxillary barbels longer than head, unbranched, without tubercles and bordered by a short but distinct, dark basal membrane; outer mandibular barbels with rather numerous, simple ramifications, branches of inner mandibular barbels subdivided, thick and tuberculate (Ref. 57223). Mandibular teeth rather short, numbering 36-48 (Ref. 57223). Denticulations of pectoral-fin spines strong on inner, and hardly visible on outer margin; dorsal-fin spine smooth anteriorly, except for some apical denticles; first branched ray of dorsal and pectoral fins prolonged into a filament (Ref. 57223). Adipose fin high and long, distincly separated from rayed dorsal fin (Ref. 57223). Humeral process deep, pointed and granulose, not keeled ventrally (Ref. 57223).
Colour: uniformly brownish, with numerous very small black spots, also on adipose fin, but none on other fins (Ref. 57223).
Africa: basins of the Nile River and Shabeelle River, and lakes Turkana, Albert, Edward and Kyoga (Ref. 57223). Also reported from Lower Chari River (Ref. 367), but despite the intensive work carried out in this region, this species has never been found again, and therefore its presence in the Chad region needs to be confirmed (Ref. 7362, 57223).
Occurs in lakes. Feeds on algae, macrophytes, detritus, crustaceans, insects and mollusks. Oviparous (Ref. 205). Breeding takes place during flooding in June to early dry down in January (Ref. 28714).
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.
IUCN Red List Status (Ref. 90363)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
CollaboratorsPicturesStamps, CoinsSoundsCiguateraSpeedSwim. typeGill areaOtolithsBrainsVision
Estimates of some properties based on empirical models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01820 (0.00819 - 0.04046), b=2.95 (2.77 - 3.13), based on LWR estimates for this Genus-BS (Ref. 93245
Trophic Level (Ref. 69278
): 2.8 ±0.33 se; Based on food items.
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (29 of 100) .