All FishesTrichomycteridaeTridentinaePotamoglanis

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Scientific NamePotamoglanis johnsoni  (Fowler, 1932)
Common Name
Type LocalityDescalvados, Mato Grosso State, Brazil.
Synonym(s)Pygidium johnsoni, Trichomycterus johnsoni
EtymologyFrom the Greek potamo (river; the gods of rivers in the Greek mythology) and glanis (catfish). Gender masculine. 
Hop to next section Species Information
Size 16mm or 0.6" SL. Find near, nearer or same sized spp.
IdentificationThe genus Potamoglanis is a group of miniaturized Trichomycterinae, diagnosed by the following traits: angle of 35–40° between the main longitudinal axis of the head and the main axis of the autopalatine; thin tubular shape of the second ceratobranchial; presence of six or seven anal-fin rays; eyes dorsally placed on head; opercular and interopercular odontodes patches not juxtaposed; absence of a distal process on the hyomandibula; and presence of a long process on the anterior region of the hyomandibula. Potamoglanis is similar to the Tridentinae genera by the presence of a wide cranial fontanelle; presence of a short ventral process in the opercular bone and by the origin of the dorsal fin placed in a vertical through the anal-fin origin.
Hop to next section Habitat Information
DistributionSouth America: Paraná River basin in Mato Grosso, Brazil and Corrientes, Argentina. Throughout the Pantanal wetlands.
La Plata, Paran√° (click on these areas to find other species found there)
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Hop to next section Husbandry Information
FurnitureIn nature, inhabits roots of aquatic plants.
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ReferencesProceedings of the Academy of Natural Sciences of Philadelphia v. 84, pp 367, Fig. p. 364.
Registered KeepersNone.
Breeding ReportsNone.
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Last Update2018 Jan 01 11:45 (species record created: 2017 Jan 30 20:44)