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: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic. Tropical
Africa: Mono (Togo), Ouémé (Benin) and the Ogun, Osse and Lower Niger basin (Nigeria)(Ref. 57223).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 14.4 cm SL male/unsexed; (Ref. 57223)
Morphology | Morphometrics
soft rays: 11 - 12. Diagnosis: gill slits not extending ventrally beyond pectoral-fin insertions; post-orbital length at least 60% of snout length; maxillary barbels longer than head, unbranched, without tubercles and bordered by a distinct black basal membrane; outer mandibular barbels with numerous short and simple ramifications, branches of inner mandibular barbels short, simple, but thick and sometimes tuberculate; mandibular teeth long, numbering 33-50; dorsal-fin spine and branched dorsal-fin rays prolonged into short filaments, the spine smooth anteriorly; denticulations of pectoral-fin spines finer on outer than on inner margin; humeral process rather slender, granulose, pointed and ventrally keeled; adipose fin well developed and rather close to rayed dorsal fin; colour uniformly dark, without spots on body or fins (Ref. 57223).
Coloration: rather dark, slightly lighter on belly; fins blackish, sometimes faintly spotted (Ref. 57223).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Oviparous (Ref. 205). Distinct pairing during breeding (Ref. 205).
Paugy, D. and T.R. Roberts, 2003. Mochokidae. p. 195-268 In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux douce et saumâtres de l'Afrique de l'Ouest, Tome 2. Coll. Faune et Flore tropicales 40. Musée Royal de l'Afrique Centrale, Tervuren, Belgique, Museum National d'Histoire Naturalle, Paris, France and Institut de Recherche pour le Développement, Paris, France. 815 p. (Ref. 57223)
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=0.01380 (0.00613 - 0.03110), b=2.95 (2.77 - 3.13), in cm Total Length, based on LWR estimates for this 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 (21 of 100) .