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Pseudancistrus nigrescens Eigenmann, 1912

Image contributors to this species:

Andreas Tanke (3)

ScotCat Sources:

Other Sources:

Relevant Information:

Aquarium Care: Not the easiest species to maintain in the aquarium as it will need pristine water conditions with well filtered water which should not be too hard. Warm water should be the norm. Adult males are very territorial and will not get on with other large Loricariid catfish. Sexual Differences: Males have a broad head and posses long bristles along the edge of the snout. Diet: Aufwuch grazer, mainly vegetarian, with lettuce, spinach, cucumber and courgette (zucchini), vegetarian flake and tablets. Will eat other foods also such as insect larvae, zooplankton and soft wood but will need to be kept on a mainly green diet. Etymology: The specific name nigrescens: Latin for blackish, referring to its nearly uniform “dark slaty” colouration.

Common Name:

L299

Synonyms:

None

Family:

Loricariidae

Distribution:

South America: Upper Potaro River basin, tributary of middle Essequibo River, Guyana.

Size:

20.0cm. (8ins)

Temp:

25-29°c (77-85°f)

p.H.

6.0-7.0.

IUCN Red List

Pseudancistrus nigrescens is common and broadly distributed and is therefore assessed as Least Concern. The only issue is that there is no general consensus on the species identity, and its taxonomy needs to be further explored. Regardless, the population seems pretty resilient as the species remains common in the severely impacted Cuyuni River basin (IUCN 2023).

Reference:

Armbruster, J.W. 2023. Pseudancistrus nigrescens. The IUCN Red List of Threatened Species 2023.
Seidel, I. 2008. Back to Nature guide to L-catfishes, Ettlingen, Germany 208 p.
Silva, G. S. C. , F. F Roxo, R. Britzke and C. Oliveira 2014 New species of the Pseudancistrus barbatus group (Siluriformes, Loricariidae) with comments on its biogeography and dispersal routes. ZooKeys 406: 1-23.
The ETYFish Project Fish Name Etymology Database © Christopher Scharpf.

Family: Loricariidae Back to Ident-A-Cat Click on Thumbnails

Pseudancistrus nigrescens

Pseudancistrus nigrescens
Mouth view

Pseudancistrus nigrescens
Location-Rio Uraricoera

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