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Fonchiiloricaria
nanodon Rodriguez, Ortega & Covain, 2011 |
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Relevant Information: |
Distinguished from all other genera
of Loricariinae by usually possessing one to three premaxillary
teeth (although these are often missing) that are much reduced
in size, particularly in comparison to the dentary teeth. The
following combination of characters also differentiates this
genus from all other members of the Loricariinae: lips with
globular papillae on surface, except for some areas close to
the opening of the mouth where the papillae are prolonged and
digitiform; distal margin of lower lip with short, triangular
filaments; premaxilla very reduced; the non-reduced condition
of the premaxilla is represented; abdomen covered by plates,
medial plates small and rhombic between lateral abdominal plates;
caudal fin with 14 total rays (12 branched); orbital notch absent;
five lateral series of plates; dorsal fin spinelet absent; preanal
plate present, large and solid, and of irregular, polygonal
shape. Trunk and caudal peduncle becoming more compressed posteriorly
for last seven to 10 plates. A rheophilic species that has been
collected in swift current, over rocky substrata of stones,
shingle, gravel and sand of the main stream of Río Huallaga
and its tributaries. The type localities are located at 600
to 700 m above sea level, between the eastern slopes of the
Andean Cordillera and the western slopes of the Cordillera Azul.
In this region, the Río Huallaga is shallow (30-250 cm)
during the dry season, but may rise to 4 m after heavy rains
or during the rainy season. Huallaga River is a white water
river ranging from 50-90 m width in the main channel during
low water level and with dense vegetation growing along its
banks. The pH, at various sites along the river where type specimens
were collected, ranged from 7.3-7.6 with conductivity from 250-432
?S cm?1. The Río Monzón, next to the bridge located
7 km upstream of Tingo Maria (MUSM 38338 and MHNG 2710.048 were
collected), is a clear water river with 50 cm of visibility
and with sandy areas and pebbles along the shore. Rheophilic
fauna collected together with some of the specimen were Chaetostoma,
Hypostomus, Lamontichthys, Spatuloricaria,
Ancistrus, Farlowella, Pimelodella,
Centromochlus, Parodon, Hemibrycon,
Knodus and Eigenmannia. |
Common
Name: |
None |
Synonyms: |
None |
Family: |
Loricariidae |
Distribution: |
South America: Peru.
Type locality: Río Huallaga, between
Tingo Maria and Aucayacu, Huanuco Department, Leoncio Prado
Province, Peru, ca. 9°19'22''S, 76°01'50''W. |
Size: |
17.5cm. (20ins) |
Temp: |
24-28°c (71-83°f.) |
p.H. |
6.0-7.0. |
Reference: |
Rodriguez, M.S., H. Ortega
and R. Covain, 2011. Intergeneric phylogenetic relationships
in catfishes of the Loricariinae (Siluriformes: Loricariidae),
with the description of Fonchiiloricaria nanodon: a new genus
and species from Peru. J. Fish Biol.
Froese, R. and D. Pauly. Editors. 2018.FishBase.
World Wide Web electronic publication. www.fishbase.org, (06/2018)
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