Ammoglanis natgeorum

Henschel, Lujan and Baskin 2020







Holotype: MHNLS 26155 12.9 mm SL.

Paratypes: ANSP 182819 (2) 12.3-12.4 mm SL (ex. AUM 54138), AUM 54138 (2) 12.6 12.7 mm SL, ROM 110299 (2) 12.0-12.4 mm SL.


Known only from the type locality: Right (east) bank of the Atabapo River mouth, base of Guapasucia Stone, adjacent to the town of San Fernando de Atabapo and c. 600 m east of the border with Colombia (middle of the Atabapo River channel), Orinoco River drainage Amazonas State, Venezuela (41053.5400N, 6741049.3400W) c.80 m above sea level.


The Atabapo River is blackwater. All specimens were collected from approximately 5 m2 of shallow, marginal habitat where rising water levels had recently inundated leaf litter over quartzitic sand among granite boulders. Specimens emerged from the leaf litter or sand upon application of rotenone, making them easy to capture using hand nets at the water's surface, and were the only fishes present

Conservation Status


Museum Holdings

As above only.

Internet Resources



Key References

Costa, W.J.E.M. Journal Article 1994 A new genus and species of Sarcoglanidinae (Siluriformes: Trichomycteridae) from the Araguaia basin, central Brazil, with notes on subfamilial phylogeny
de Pinna, M.C.C. and Winemiller, K.O. Journal Article 2000 A new species of Ammoglanis (Siluriformes: Trichomycteridae) from Venezuela
Mattos, J.L.O., Costa W.J.E.M. and Gama, C. de S. Journal Article 2008 A new minature species of Ammoglanis (Siluriformes: Trichomycteridae) from the Brazilian Amazon
Adriaens, D., Baskin, J.N. and Coppens, H. Book Section 2010 Evolutionary morphology of trichomycterid catfishes: about hanging on and digging in
Costa, W.J.E.M., Mattos, J.L.O. and Santos, A.C.A. Journal Article 2019 Ammoglanis multidentatus, a new miniature sanddwelling sarcoglanidine catfish with unique osteological features from northeastern Brazil (Siluriformes: Trichomycteridae)
Henschel, E., Lujan, N.K. and Baskin, J.N. Journal Article 2020 Ammoglanis natgeorum, a new miniature pencil catfish (Siluriformes: Trichomycteridae) from the lower Atabapo River, Amazonas, Venezuela
Henschel, E., Bragança, P.H.N., Rangel-Pereira, F. and Costa, W.J.E.M. Journal Article 2020 A new psammophilic species of the catfish genus Ammoglanis (Siluriformes, Trichomycteridae) from the Amazon River basin, northern Brazil