Rapp Py-Daniel & Olvieira, 2001
onfined to the coastal drainages of French Guiana and Suriname
we present a not too often seen species in the hobby from the
Harttia genus. Although
there are another 21 species in this genera, only five are represented
in this area. In French Guiana, H, fowleri (Pellegrin,
1908) H. guianensis Rapp Py-Daniel & Olvieira, 2001,
surinamensis Boeseman 1971. In Suriname, H.
fluminensis Covain & Fisch-Muller, 2012, H.
surinamensis Boeseman 1971 (again), Harttia
tuna Covain & Fisch-Muller, 2012. and
H. guianensis Rapp Py-Daniel & Olvieira, 2001
(again). In Suriname this species is only known from the Marowijne
The habitat of Harttia guianensis
is confined to the main channel of rivers of the interior on
rocky and and sandy substrates in fast flowing water. This species
usually lives alongside Cteniloricaria
Head depth, 2.3-3.3 times in SL; body depth
1.9-3.2 times in SL. Belly totally naked except for thoracic plates
and a group of small irregular plates concentrated on the anus,
just posterior to pelvic-fin insertion. Rictal barbels small, attached
to lower lip by small membrane. Stomach indistinguishable; intestine
very long, about 14 times in SL. Keeled lateral plates, 29-30.
guianensis - dorsal
Head and predorsal uniformly dark brown in
larger individuals and marbled in young. Caudal fin with two small
dark black blotches at tip of upper lobe and only one on tip of
lower lobe; point of confluence of the lateral keels at 20-22nd.
Dorsal fin with large black spot on its distal end. Other fins spotted
except the anal fin.
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.
Peaceful fish with other companions who
like water movement in the aquaria. Better to keep this species
in a small group if possible.
They lay their eggs on a flat surface and
practise brood care. Feeding
the fry consists of newly hatched Artemia nauplii, microeels,
and fine dry foods or Spirulina tablets. Feeding was given
5 times daily. (Thomas Wiedner from Evers, H.-G. & I.Seidel:
Mergus, Baensch Catfish Atlas Volume 1, 1st English edn., 2005.
|Males tend to have odontodes
(hair like structures) on the first ray of the pectoral fins
and the head in males is broader with also odontodes and the
same structures on the keels of the lateral plates.
Dry foods, algae wafers, Spirulina and
normal tablet foods. Frozen foods, Artemia nauplii, glass
worms and Daphnia.
Standard length as measured from the snout to the
to the chest area.
A sensory line, along the sides of the body.
Pelvic fins: The paired fins, between the
pectorals and the anal fins. (also referred to as ventrals).
Rictal barbels: Pertaining to the barbels
on the corners of the mouth.
Caudal fin: The tail.
Dorsal fin: The primary rayed fin(s) on
top of the body.
Anal Fin: The median, unpaired, ventrally
located fin that lies behind the anus, usually on the posterior
half of the fish.
Named for French Guiana.
L.H. and E.C. Oliveira,
2001. Seven new species of Harttia from the Amazonian-Guyana
region (Siluriformes: Loricariidae). Ichthyol. Explor. Freshwat.
Seidel, I. 2008. Back to Nature guide to
L-catfishes, Ettlingen, Germany 208 p
Froese, R. and D. Pauly. Editors. 2015.FishBase.
World Wide Web electronic publication. www.fishbase.org,
( 10/2015 )
Evers, H.-G. & I.Seidel: Mergus, Baensch
Catfish Atlas Volume 1, 1st English edn., 2005. Pp.944.
Mol, H.A. Jan, The Freshwater Fishes of Suriname.
BRILL, Leiden Boston, 2012. 889 p.
Bottom: © Mark Sabaj