Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Siluriformes (Catfishes) >
Mochokidae (Squeakers or upside-down catfishes) > Mochokinae
Etymology: Synodontis: Greek, syn, symphysis = grown together + Greek, odous = teeth (Ref. 45335); abditus: The specific name is the Latin adjective abditus, -a, -um, which means hidden, refers to its hitherto 'hidden' existence, being both, similar to and misidentified as Synodontis haugi in the past, and hence hidden in collections for over 20 years (Ref. 126042).
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; demersal. Tropical
Africa: endemic to Ogowe River basin in Gabon (Ref. 126042).
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 16.5 cm SL male/unsexed; (Ref. 126042)
Short description
Identification keys | Morphology | Morphometrics
Dorsal spines (total): 1; Dorsal soft rays (total): 7; Anal spines: 3; Anal soft rays: 8 - 9. Diagnosis: Synodontis abditus can be distinguished from all its congeners of the Lower Guinea ichthyological province by the following unique combination of characters: no serrations on anterior surface of the dorsal spine, vs. entirely serrated in S. albolineatus, S. batesii and S. woleuensis; a relatively high number of mandibular teeth, 63-76 vs. lower, 12-39 in S. acanthoperca, S. carineae, S. marmoratus, S. ngouniensis, S. obesus, S. punu, S. rebeli, S. robbianus, S. schall, S. steindachneri and S. tessmanni; and a relatively high number of serrations on posterior side of the pectoral spine, 16-28 for specimens of 72.2-152.7 mm standard length, vs. 16-31 in S. haugi and S. polyodon, with positive allometry (Ref. 126042).
Collected in slow-flowing parts of the river, such as the vicinity of sandy islands, the mouth of small aflluent creeks, or the edge of the main river; and where sublittoral sandstone is the predominant substrate type (Ref. 126042).
Life cycle and mating behavior
Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae
De Weirdt, D., C.E.T. Huyghe and E.J.W.M.N. Vreven, 2021. Synodontis abditus (Teleostei: Mochokidae), a new squeaker catfish from the Ogooué basin, Gabon. Ichthyol. Explor. Freshwaters 31(1):69-82. (Ref. 126042)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
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Internet sources
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = No PD50 data [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01549 (0.00700 - 0.03427), b=2.88 (2.70 - 3.06), 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.
120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
