76 currently valid species, the bushynose catfish
genus Ancistrus is the fourth most species-rich
catfish genus, yet Ancistrus diversity remains
underestimated, with many species still undescribed.
This is especially true of the Peruvian Andean headwaters
of the Amazon, which are rich in unnamed Ancistrus
species but have received little recent taxonomic
attention. We describe a distinctively striped new
Ancistrus species from tributaries of the
Palcazú River, in the Pachitea-Ucayali-Amazonas
drainage basin. The new species differs from all congeners
by having black, vermiculated lines covering the head
and two to four distinct black, parallel, lateral
body stripes from head to caudal fin (vs. body uniformly
coloured or with dark or light spots or blotches over
head and body, or black vermiculate lines on flanks).
The new species is the fifth valid species of Ancistrus
described from the rich Ucayali River ichthyofauna
(Neuhaus, E. B. et al 2023). Aquarium Care:
The Ancistrus genera make good community
fish where they do not grow too big for the aquarium.
Some species have different requirements in the aquarium
so best to read up on the species you have whereas
if they need higher oxygen requirements or not, or
if they prefer cooler waters if they originate from
the southern parts of South America against the species
from further up north. Diet: Vegetable
foods such as cucumber and courgette and also tablet
and meaty foods. Reproduction: Lay
their eggs in caves as a cluster and the first signs
of the breeding process is a few tiny fry darting
around the community tank. Etymology:
The specific name honours the Yanesha, or Amuesha,
indigenous community, who occupy territories along
the species' distribution. Yanesha literally translates
to “we, the people” and the community
is known for its strength, resilience and resilience
in the face of various challenges throughout Peru’s
It has previously been recognised in the aquarium
fish trade as Ancistrus sp. (L267).
L267, Four stripe Ancistrus
of the Palcazú River, in the Pachitea-Ucayali-Amazonas
Neuhaus, E. B., Meza-Vargas,
V., Herrera, J. R., & Lujan, N. K. (2023).
A new distinctively striped species of bushynose catfish
(Siluriformes: Loricariidae: Ancistrus) from
the Pachitea River drainage, Pasco, Peru. Journal
of Fish Biology, 1–10.
Seidel, Ingo; Back to Nature guide to L-catfishes