For a long time it was listed
as a synonym of Ancistrus
hoplogenys but was
revalidated by Provenzano & Barriga-Salazar in
2018 as Ancistrus alga. 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:
The female lays her eggs in caves or crevices... that
the male has chosen and cleaned.... as a cluster.
The male usually then guards the eggs after ejecting
the female. The fry then cling to the sides of the
cave and when they use up their yolk sac, which is
around the four to seven day period, they will be
ready to feed on infusuria, vegetable matter, brine
shrimp naupli or micro worms. In a community tank
a few will survive if enough hiding places are afforded
to them. Etymology: The specific
name alga: etymology not explained, possibly
referring to algae, a food item in its largely herbivorous
diet. Remarks:
Still found on some online searches as A. hoplogenys.
South America:
Lower Napo River basin, upper Amazon basin (Ecuador
and Peru). Type Locality: Río
Ambyiacu, Peru.
Size:
16-18cm (6-7ins)
Temp:
25-29°c (77-84°f.)
p.H.
6.0-7.5.
IUCN
Red List
Despite
the little information available on this species, it
has a wide range and no apparent threats. Therefore,
it is assessed as Least Concern. (IUCN 2023).
Reference:
Ingo Seidel & Andreas
Tanke. Bristlenose Catfishes: The Plecos
of the Genus Ancistrus. ATS-Aquashop.de. Nature2 Arts
639p.v
Salvador, G.N. 2023. Ancistrus hoplogenys.
The IUCN Red List of Threatened Species 2023 (Synonym).
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