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, and H.
Boeseman 1971. In Suriname, H.
Covain & Fisch-Muller, 2012, H.
surinamensis Boeseman 1971 (again),
Harttia tuna Covain & Fisch-Muller, 2012.
H. guianensis Rapp Py-Daniel & Olvieira,
2001 (again). In Suriname this species
is only known from the Marowijne River.
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
Sinnamary and Approuague River basins. Type
Locality: Approuague River, Saut Athanase,
4°11'N, 52°19'W, French Guiana.
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.
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.
Care & Compatibility
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. Pp.944.)
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.
The median, unpaired, ventrally located fin that lies
behind the anus, usually on the posterior half of
the fish. Caudal fin: The tail. Dorsal fin: The primary rayed fin(s)
on top of the body. Lateral: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. SL.:Standard length
as measured from the snout to the caudal peduncle. Thoracic:
Pertaining to the chest area.
Named for French Guiana.
H.-G. & I.Seidel:Mergus, Baensch Catfish Atlas Volume 1, 1st
English edn., 2005. Pp.944. Froese, R. and D. Pauly. Editors.
2015. FishBase. World Wide Web electronic publication.
www.fishbase.org, ( 10/2015 ). Mol, H.A. Jan, The Freshwater Fishes
of Suriname. BRILL, Leiden Boston, 2012. 889 p. Rapp
Py-Daniel, L.H. and E.C. Oliveira,
2001. Seven new species of Harttia from the Amazonian-Guyana
region (Siluriformes: Loricariidae). Ichthyol. Explor.
Freshwat. 12(1):79-96. Seidel, I. 2008. Back to Nature guide
to L-catfishes, Ettlingen, Germany 208 p.