Ammoglanis amapaensis is
a very small species and is described from three drainages
of the Brazilian Amazon: Jari, Amapari and Araguari.
It is distimguished from other congeners by having
nostril barbel long, reaching the posterior margin
of the eye, cranial fontanel absent, and the anterior
portion of the palatine with a small ossification.
It seems to be mostly related to A. pulex,
with which it shares a scythe-shaped lachrymal with
an anterior facet and a short ventro-latterly directed
process in the palatine.
Dorsal soft rays (total): 5; Anal soft rays: 4; Vertebrae:
29 - 31. This species is distinguished by having a
slender and long quadrate with greatest depth about
30% of the length of its main axis; compared to its
congeners, it has a long nostril barbel, reaching
the posterior margin of the eyes (vs. reaching anterior
margin), no cranial fontanel (vs. present), anterior
part of palatine with small ossification (vs. none).
South America:Drainages of the Brazilian Amazon: Jari,
Amapari and Araguari.
25 -28°c (77-83°f.)
Mattos, J.L.O., W.J.E.M.
Costa and C. de S. Gama, 2008. A new miniature
species of Ammoglanis (Siluriformes: Trichomycteridae)
from the Brazilian Amazon. Ichthyol. Explor. Freshwat.
19(2):161-166. Froese, R. and D. Pauly. Editors.
2019. FishBase. World Wide Web electronic publication.
www.fishbase.org, ( 08/2019 ).