| Los Amigos del Pilcomayo |
Pterodoras granulosus (Valencienes, 1833)
In co-operation with department of Aquatic Ecology & Environmental Biology.
Fishes of the Pilcomayo
Common name: Armado
Class: Actinopterygii (ray-finned fishes)
Order: Siluriformes (catfish)
Family: Doradidae
Species
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| Source: translated from 100 Peces argentinos; Hernán Laita y Gustavo Aparicio; Editorial Albatros; 2005; ISBN 950-24-1012-2 Armado común (Pterodoras granulosus) This species of Armado is frequently obtain by fishermen with rod. Their coloration is more yellowish than that of the Armado chancho, and contrary to this the mouth is directed forward. Looked for because of their meat, it is common that after having obtained it a line under their pectoral fins is cut and it is hanged up face up on a rope so that it bleeds. It is not strange that, some places frequently visited by fishermen, the strongly ossified radios of the pectoral and dorsal fins, similar to "handsaws", can be found. Their diet is, the same as that of other Armados, omnivorous. They are usually examples with a very swollen stomach full with the last ingested food. It would be interesting to study the diet of the Armado and other species, for example, the Boga, as biological controllers of molluscs invaders. |
| Source: translated from: Peces de los Ríos Bermejo, Juramento y Cuencas Endorreicas de la Provincia Salta; Gladys Monasterio de Gonzo; Museo de Ciencias Naturales y Consejo de Investigación Universidad Nacional de Salta; Octubre 2003. Pterodoras granulosus (Valenciennes, 1833) Common name: Armado. Identification: Fish of considerable size that besides presenting the characteristics typical of the gender, they are characterized by the rounded contour of the head. The bones that conform it are strongly grooved and granular. The fontanela only extends a little from behind the eyes. Wide provided mouth of a band of viliformes teeth. The maxillary barbs are fine and long, they arrive until almost half of the pectoral thorn. The mentonianas barbs are also long and very fine in the end distal, they reach the origin of the pectoral fin. The post-mentonianas barbs also fine but not so long as the previous ones, only reaching half of longitude of the mentonianas barbs. The dorsal thorn is weakly sawed in both margins. The pectoral thorns are strongly sawed, the mountains are approximately of the same size in both margins and they are more outstanding than those of the dorsal thorn. These pectoral thorns are prolonged in a short filament. The humeral process is long and narrow, the end distal is of almost rectangular contour. The fatty fin forms a moderate keel. It presents among 21 to 30 lateral shields. Colour: Brown yellowish with dark small brown specks in back and flanks. Dimensions: Up to 700 mm. Ecology: Omnivorous fish, feeds mainly on fruits, vegetable remains, seeds, crustaceans, mollusks, insects and remains of other fish. They live preferably in soft and vegetated funds. |