Actinopterygii (ray-finned fishes) > Siluriformes
(Catfish) > Mochokidae
(Squeakers or upside-down catfishes)
Etymology: Synodontis: Greek, syn, symphysis = grown together + Greek, odous = teeth (Ref. 45335); vanderwaali: Named after the collector of the holotype, Ben van der Waal, in recognition of his donations of fish collections from northern Namibina rivers to the J.L.B. Smith Institute and the Albany Museum (Ref. 26674).
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic. Tropical
Africa: Upper Zambezi, Okavango River and Delta, and Cunene River.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 16.0 cm SL male/unsexed; (Ref. 26674)
Morphology | Morphometrics
Vertebrae: 38 - 39. Diagnosed by having numerous mandibular teeth (25-41); a large number of tertiary premaxillary teeth in several rows across the width of the tooth pad; and a relatively long barbels, the maxillaries without any papillae on the leading edge. Pigment pattern with variable spots which are often drawn out to form a finely vermiculated network (Ref. 26674)
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Oviparous (Ref. 205). Distinct pairing during breeding (Ref. 205).
Skelton, P.H. and P.N. White, 1990. Two new species of Synodontis (Pisces: Siluroidei: Mochokidae) from southern Africa. Ichthyol. Explor. Freshwat. 1(3):277-225. (Ref. 26674)
IUCN Red List Status (Ref. 115185)
CITES (Ref. 115941)
Threat to humans
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=0.01349 (0.00649 - 0.02802), b=2.93 (2.76 - 3.10), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 2.9 ±0.4 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (23 of 100) .