Cat-eLog Right Arrow Trichomycteridae Right Arrow Sarcoglanidinae Right Arrow Ammoglanis

Jump to next section Cat-eLog Data Sheet
Scientific Name Ammoglanis pulex  de Pinna & Winemiller, 2000
Common Name
Type Locality Río Paria Grande at bridge on road between Pto. Ayacucho and Samariapo (5°23'N, 67°37'W), Estado Amazonas, Venezuela.
Etymology The specific epithet pulex means flea in Latin, in reference to the minute size of the species. A noun in apposition.
Jump to next section Species Information
Size 14mm or 0.6" SL. Find near, nearer or same sized spp.
Identification Ammoglanis is a genus of diminutive slender trichomycterids. Its original description identified three unique traits for the genus: 1) slender quadrate, its maximum depth about 30% of length of its main axis; 2) expanded anterior tip of interopercle; and 3) premaxilla located posterior to mesethmoid cornu.

Ammoglanis pulex can be identified by possessing all of the following traits: 1) dark chromatophores in interior of the body, forming a banded pattern visible from both sides by transparency in the living fish; 2) lack of dentary teeth; 3) scythe-shaped lacrimal with an anterior facet articulating with the anterior palatine cartilage; and 4) lack of premaxillary teeth.
Jump to next section Habitat Information
Distribution Western Guiana highlands in northern Amazonas Territory and western Estado Bolivar, Venezuela. Rio Orinoco basin.
Orinoco, Paraguaza (click on these areas to find other species found there)
Amazon, Middle Amazon (Solimoes), Negro, Upper Negro, Casiquiare, Pamoni (click on these areas to find other species found there)

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IUCN Red List Category Not Evaluated
pH 5.5 - 6.2
Temperature 27.5-28.0°C or 81.5-82.4°F (Show species within this range)
Other Parameters In nature, found along stream segments with slow current. Temperature and pH values listed are those recorded in the wild when the species was described.
Jump to next section Husbandry Information
Feeding The mouthparts of this species indicates it is a nonparasitic trichomycterid. Likely, it feeds on microscopic fauna (e.g. protozoa, rotifers, nematodes) living between sand grains in the stream bed.
Furniture In the wild, collected in sand banks near the shorelines of clearwater, slightly tea-stained, streams. Fish are found buried in coarse clear sand at the stream edge, at depths ranging from approximately 2 to 20 cm. The locations where fish were found were always shaded by dense tropical rain forest (gallery forest).
Compatibility In nature, this species is found with a variety of other fish, including Astyanax cf. polylepis, Bryconaps sp., Capella sp., Hyphessobrycon sp., unidentified Characidae, and Aequidens diadeas. This is not to say that A. pulex is compatible with all of these, but merely that they are found together.
Breeding Reports There is no breeding report.
Jump to next section Further Information
Reference Ichthyological Exploration of Freshwaters v. 11 (no. 3), pp 257, Figs. 1-3.
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Last Update 2019 Nov 27 23:32 (species record created: 2019 Nov 27 15:59)