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Mark Henry Sabaj (2)

Aquarium Care: Relatively peaceful but will eat smaller fish when larger. Provide floating plants for seclusion as this is a nocturnal species. Provide caves/pipes for hiding out during the daylight hours. Sexual Differences: as with all of this family internal fertilization is carried out. The anal fin is the key to the sexual dimorphism of this genus, if you think of the male and female of most livebearer fish (Goodeidae family) and you will not be too far away with this assumption. The female has a normal anal fin but the males are modified into a copulatory organ with the first and second ray thickened and longer, it is thought that the male uses this to clasp the female during the spawning embrace. The eggs are laid on a previously cleaned surface. Etymology: Trachelyopterichthys: from the Greek, trachelos, meaning neck, pteron, meaning fin and ichthys, meaning fish; in reference to the long cranial shield, giving the appearance that the dorsal fin starts in the region of the neck area. The specific name anduzei: in honour of Pablo J. Anduze (1902-1989), Venezuelan explorer, ethnologist, medical entomologist, and former governor of Amazonas State, Venezuela, for his continued interest in the natural history of Venezuela’s Amazon region. Remarks: Trachelyopterichthys anduzei is found in remote, sparsely populated areas of the upper Orinoco in Venezuela and black to clearwater rivers of adjacent savannahs in Colombia and Venezuela. The species occur in protected areas. The data in biological collections and different regional reports do not suggest a perceptible reduction in the population. Therefore, it is considered of Least Concern (IUCN 2021).

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Auchenipteridae

South America: Orinoco River basin: Venezuela and Colombia. Type locality: Laguna de Carida at the mouth of Caño Carida, Río Orinoco, Terr. Federal Amazonas, Venezuela.

14.0cm. (5½ins)

20-25°c (67-77°f.)

6.0-7.2.

Ferraris, C.J. Jr., 2007. Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types. Zootaxa 1418:1-628.
Froese, R. and D. Pauly. Editors. 2024. FishBase. World Wide Web electronic publication. www.fishbase.org, ( 02/2024 ).
Villa-Navarro, F., DoNascimiento, C., Mojica, J.I., Rodríguez-Olarte, D., Usma, S. & Herrera-Collazos, E.E. 2021. Trachelyopterichthys anduzei. The IUCN Red List of Threatened Species 2021.