Cetopsidium soniae Vari & Ferraris, 2009
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drawing shows typical species in Cetopsidae.
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drawing shows typical species in Cetopsidae.
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> Siluriformes (Catfishes) > Cetopsidae (Whale catfishes) > Cetopsinae
Etymology: Cetopsidium: From Cetopsis, the first genus proposed in subfamily Cetopsinae, and 'idium' meaning diminutive, referring to the relatively small body sizes of the members of the genus; soniae: The species name, soniae, is in honor of Dr. Sonia Fisch-Muller of the Muséum d’histoire naturelle, Geneva, who brought the species to our attention, has been of invaluable assistance to both authors with a number of projects over the years, and ha.
Eponymy: Dr Sonia Fisch-Muller is a professor at the Department of Herpetology and Ichthyology, Muséum d’histoire naturelle, Geneva. She co-wrote: Three new species of Ancistrus (2005). She brought Cetopsidium soniae to the authors’ attention. (See also Muller, S) (Ref. 128868), visit book page.
More on authors: Vari & Ferraris.
Etymology: Cetopsidium: From Cetopsis, the first genus proposed in subfamily Cetopsinae, and 'idium' meaning diminutive, referring to the relatively small body sizes of the members of the genus; soniae: The species name, soniae, is in honor of Dr. Sonia Fisch-Muller of the Muséum d’histoire naturelle, Geneva, who brought the species to our attention, has been of invaluable assistance to both authors with a number of projects over the years, and ha.
Eponymy: Dr Sonia Fisch-Muller is a professor at the Department of Herpetology and Ichthyology, Muséum d’histoire naturelle, Geneva. She co-wrote: Three new species of Ancistrus (2005). She brought Cetopsidium soniae to the authors’ attention. (See also Muller, S) (Ref. 128868), visit book page.
More on authors: Vari & Ferraris.
Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied Ecologie
; zoet water benthopelagisch. Tropical
Verspreiding Gebieden | FAO regio's | Ecosystemen | Voorkomen | Verspreidingskaart | Introducties | Faunafri
South America: Guyana. Cetopsidium soniae is known from the type locality in the Manari River, a tributary of the Takutu River in the western portions of the rio Branco system of the Amazon basin (Ref. 82380).
Grootte / Gewicht / Leeftijd
Maturiteit: Lm ? range ? - ? cm
Max length : 3.1 cm SL mannelijk / geslacht onbekend; (Ref. 82380); 3.6 cm SL (female)
Max length : 3.1 cm SL mannelijk / geslacht onbekend; (Ref. 82380); 3.6 cm SL (female)
Korte beschrijving Determinatiesleutels | Morfologie | Morfometrie
Cetopsidium soniae differs from its congeners in the posterior extent of the pelvic fin (falling distinctly short of the vent versus extending beyond the vent and reaching to the origin of the anal fin in C. minutum (Eigenmann, 1912), and reaching to or slightly beyond the anterior limit of the vent in C. ferreirai Vari, Ferraris & de Pinna, 2005, C. morenoi (Fernández-Yépez, 1972), C. orientale (Vari, Ferraris & Keith, 2003), and C. pemon Vari, Ferraris & de Pinna, 2005, the position of the vent (proximate to the base of the anterior most anal-fin ray versus distinctly anterior to that location in C. roae Vari, Ferraris & de Pinna, 2005), the form of the first rays of the dorsal and pectoral fins (with distal filaments present in males versus without such sexually-dimorphic filaments in C. ferreirai), the orientation of the dorsal and ventral profiles of the postdorsal portion of the body (converging posteriorly versus running in parallel in C. orientale), the distribution of dark pigmentation on the body (with pigmentation distributed across dorsal and lateral surfaces of body versus limited to middorsal region in C. ferreirai), the degree of dark pigmentation on the ventral surface of the lower jaw (with
limited or no pigmentation versus with broad band of pigmentation in C. orientale), the form of the pigmentation on the head and body (chromatophores large and stellate versus small and round in C. minutum and C. pemon), the extent of the pigmentation on the dorsal fin (without any pigmentation or at most several small dark basal spots versus with distinct semicircular dark spot basally in C. morenoi, C. orientale, and
C. pemon), the body depth (0.17-0.18 versus 0.14-0.15 of SL in C. roae), and the form of the head in lateral view (triangular overall but relatively deep posteriorly versus more acutely triangular in C. minutum [see Vari et al., 2005).
Body shape (shape guide): elongated.
Body shape (shape guide): elongated.
Levenscyclus en paargedrag Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
Hoofdreferentie
Upload uw referenties | Referenties | Coördinator : Ferraris, Jr., Carl J. | Medewerkers
Vari, R.P. and C.J. Ferraris Jr., 2009. New species of Cetopsidium (Siluriformes: Cetopsidae: Cetopsinae)from the upper rio Branco system in Guyana. Neotrop. Ichthyol. 7(3):289-293. (Ref. 82380)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))
Onvoldoende gegevens (DD) ; Date assessed: 16 November 2020
CITES
Not Evaluated
Gevaar voor de mens
Harmless
Gebruik door de mens
FAO - Publication: search | FishSource |
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Schattingen op basis van modellen
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Fylogenetische diversiteitsindex (Ref. 82804) |
PD50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.00550 (0.00224 - 0.01349), b=3.13 (2.92 - 3.34), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
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Trofisch niveau (Ref. 69278) |
3.3 ±0.4 se; based on size and trophs of closest relatives |
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Kwetsbaarheid van de visserij (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |