Ageneiosus lineatus differs from its congeners,
pardalis and A. vittatus,
by having prominent dark stripes on the sides of the
body (v. uniform colour with irregular dark specks
or blotches on sides of body). Ageneiosus lineatus
inermis, A. magoi, A.
polystictus and A.vittatus
by having a deeply forked caudal (v. caudal emarginate
to truncate). Ageneiosus lineatus differs
from A. apiaka, A. dentatus, A.
and A. uranophthalmus by having a shorter
anal fin (32–38 anal-?n rays v. 39–49).
Ageneiosus lineatus differs from A. pardalis
by havinga reduced and ossified gas bladder (v. large,
non-ossified gas bladder) and by having epaxial musculature
covering the tympanic region (v. tympanic region translucent,
not concealed by epaxial musculature). Ageneiosus
lineatus differs from A. inermis and
A. ucayalensis by having fewer gill rakers
on the first branchial arch (11–18, mode =13v.
18– 30, mode =22). Ageneiosus lineatus
differs from A.
militaris by having a longerpectoral
fin spine (15·4–21·8v.10·5–14·6%
LS) and longer pelvic fin (13·1–17·1v.9·6–13·6%
LS). Aquarium Care: As per this genera
they will be fine as juveniles, but as they mature
they become predatory so would need to be kept with
fish that are not too small. A large tank would be
needed with plenty of swimming space. Sexual
a genital papilla and when sexually mature have an
enlargedand curved extension to
the dorsal fin spine. They also grow thickened barbels
to grasp the females with. These differences revert
back to normal when not in season. Diet:
Meat based. Remarks: This genus was
previously placed in its own family of Ageneiosidae
and you can still find some publications that still
follow this line. In some online sources this species
is still listed as A. vittatus or not listed
at all (2021). Comments: This species
is well-represented in scientifc collections, but
has commonly been mis-identified as A. vittatus.
As with A. polystictus, A. lineatus,
although not formally described at the time, was observed
and illustrated by Alfred Russel Wallace during his
mid-1800s expedition to the Negro River (Toledo-Piza,
2002: 291, fig. 114). Its status as an undescribed
species was first recognised by Walsh (1990) and it
was also previously documented from the Orinoco River
basin (Royero, 1999). In 2014, large numbers of live
specimens of this species were seen being prepared
for shipment by a commercial exporter of ornamental
fishes in Iquitos, Peru (S. J. Walsh pers. obs.).
This and other small species of Ageneiosus
are becoming increasingly popular in the aquarium
trade (Ribeiro et al 2017).
South America:Widely distributed throughout the Amazon
and Orinoco River basins. Type Locality:
Rio Negro, Rio Jaú, Novo Airã, Amazonas,
Ribeiro, Frank Rapp
Py-Daniel, Lúcia Walsh, Stephen 2017/02/01.
Taxonomic revision of the South American catfish genus
Ageneiosus (Siluriformes: Auchenipteridae) with the
description of four new species: taxonomic revision
of ageneiosus 90 10.1111/jfb.13246 Journal of Fish
Biology. Sabaj, Mark Henry.Facebook