Ageneiosus
inermis
(Linnaeus, 1766) |
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| Image
contributors to this species: |
|
Frants Lehmann (1 stamp)
Mark Sabaj Pérez (1) |
|
ScotCat Sources: |
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| Other
Sources: |
 
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| Relevant
Information: |
Anal soft rays: 34 - 40;
Vertebrae: 46 - 51. Body naked and elongated. Head is pointed and
depressed at the top. Mouth is big and wide. The lateral eyes are
situated along the level of the mouth, ensuring a vision above and
below. Exhibits sexual dimorphism, like A. dentatus. The
first ray of the dorsal fin is very long and has pointed spines.
Prefers rivers in overgrown backwaters where the current is not
too strong. Feeds on fish and crustaceans. Its flesh is esteemed
for its very fine flavor. Is reported to be nocturnal. Frequently
captured with nets, the males are difficult to release from the
nets because of its strong dorsal spine bordered with denticles.
During reproduction, the mandibular barbels and dorsal spine of
the male change, and a copulatory organ appears at the anterior
level of the anal fin. Fertilization is internal, the female being
capable of keeping the spermatozoids inserted in the epithelium
of her genital tract. |
| Common
Name: |
None |
| Synonyms: |
Silurus
inermis, Ageneiosus armatus, Ageniosus brevifilis, Ageneiosus brevifilis,
Hypothalmus dawalla, Ageneiosus dawalla, Davalla schomburgkii,
Ageneiosus axillaris, Ageneiosus sebae, Ageneiosus therezinae, Ageneiosus
therezine, Ageneiosus ogilviei, Ageneiosus gabardinii |
| Family: |
Auchenipteridaeblycipitidae |
| Distribution: |
South
America: Widely
distributed in South America, east of the Andes. Type locality:
Surínam. |
| Size:
|
50.0cm.
(20ins) |
| Temp: |
22-24°c
(71-75°f.) |
| p.H. |
6.5-7.5 |
| Reference: |
Froese, R. and
D. Pauly. Editors. 2009.FishBase. World Wide Web electronic
publication. www.fishbase.org, version (11/2011).
Boujard, T., M. Pascal, F.J. Meunier and
P.-Y. Le Bail 1997 Poissons de Guyane. Guide écologique
de l'Approuague et de la réserve des Nouragues. Institut
National de la Recherche Agronomique, Paris, 219 p.
Le Bail, P.-Y., P. Keith and P. Planquette 2000
Atlas des poissons d'eau douce de Guyane (tome 2, fascicule II).
Publications scientifiques du Muséum national d'Histoire
naturelle, Paris:307 p.
Ferraris, C.J. Jr., 2007. Checklist of catfishes,
recent and fossil (Osteichthyes: Siluriformes), and catalogue
of siluriform primary types. Zootaxa 1418:1-628. |
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