Similar to H.
surinamensis but differs
in colour and morphometrics. Description:
Dorsal soft rays (total): 7; Anal spines: 1; Anal
soft rays: 5. Distinguished from all other species
of the genus Harttia except Harttia tuna
and Harttia trombetensis by having an incomplete
abdominal cover, restricted to preanal and abdominal
lateral plates with a row of platelets joining these
two series of plates (vs. absence of row of platelets
making junction between preanal and lateral abdominal
plates), and by its specific barcode sequence (JF292263).
Differs from Harttia tuna by having a deeper
head (37.31-43.30, mean 38.94 ± 1.42% of HL,
vs 31.96-38.77, mean 36.52 ± 1.80% of HL),
and from Harttia trombetensis by its colour
pattern of caudal fin (a large dark band at base of
caudal fin vs. a dark rounded blotch). Can be further
diagnosed from all other congeners by having a greater
minimum caudal peduncle depth (mean = 1.60 ±
0.11% of SL vs. 1.35 ± 0.13 < mean <
1.43 ±0.11% of SL); and a greater interorbital
width (mean = 24.25 ±1.02% of HL vs. 22.04
± 1.27 < mean < 23.12 ± 1.11%
of HL). Aquarium Care: Not the easiest
genera to keep as they will need clean, oxygen rich
water and a strong current. Does not do well in imports
due to its difficulty in traveling containers. Diet:
Dry foods, algae wafers, Spirulina and normal tablet
foods. Frozen foods, Artemia nauplii, glass
worms and Daphnia. Sexual Differences:
Males tend to have odontodes (hair like structures)
on the first ray of the pectoral fins and the head
in males is broader. Etymology: The
specific name fluminensis: The specific name
'fluminensis' is from the Latin flumen meaning river,
in reference to the ecology of Harttia that
represents a group of rheophilic fish from the main
channel of rivers.
Common
Name:
None
Synonyms:
None
Family:
Loricariidae
Distribution:
South America:Known only from the Coppename River drainage
in Suriname.
Size:
15.0cm. (6ins)
Temp:
25-28°c (75-83°f.)
p.H.
6.0-7.0.
IUCN
Red List
Harttia
fluminensis has a restricted range of distribution
and is known only from Coppename River drainage, Suriname.
The extent of occurrence (EOO) is estimated at 3,231
km2, and the area of occupancy (AOO) at 2,848 km2. However,
it is suspected that the species has a larger distribution
than currently known due to its recent description,
occurring in other tributaries of the river. Further
survey work is needed to look for the species in more
localities in order to better understand its real range.
The overall area of distribution seems well preserved
and there is no apparent impacts in the environment.
Thus, Harttia fluminensis is assessed as Least
Concern (LC). However, the restricted
range may immediately place the species under threat
if exposed to any impacts in its habitat. Thus, since
this species is not well known, it is recommended to
continually assess and monitoring the presence of any
possible impacts. (IUCN 2022).
Reference:
Calegari,
B.B. 2022. Harttia fluminensis. The
IUCN Red List of Threatened Species 2022.
Covain, R., S. Fisch-Muller, J.I. Montoya-Burgos, J.H.
Mol, P.-Y. Le Bail and S. Day, 2012. The Harttiini
(Siluriformes, Loricariidae) from the Guianas: a multi-table
approach to assess their diversity, evolution, and distribution.
Cybium 36(1):115-161. Froese, R. and D. Pauly. Editors. 2015.
FishBase. World Wide Web electronic publication. www.fishbase.org,
( 10/2015 ).
Harttia
fluminensis
Head view-Boven Coppename, Suriname
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