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Panaqolus koko Fisch-Muller & Covain, 2012

Image contributors to this species:

Raphael Covain (2)

ScotCat Sources:

Etymology = Genus

Other Sources:

Fishbase  Search Google  All Catfish Species Inventory

Relevant Information:

Dorsal spines (total): 2; Dorsal soft rays (total): 7; Anal spines: 1; Anal soft rays: 5. This species is distinguished by its large and almost spoon-shaped teeth characteristic of Panaqolus but bifid instead of most generally unicuspid in congeners, and characterized by its specific barcode sequence (JF747003). Differs also from all other congeners except Panaqolus dentex and P. nocturnus by having a uniformly blackish-brown colouration (vs. banded pattern of colouration in P. purusiensis, P. gnomus, P. maccus, and P. changae; or spotted pattern of coloration in P. albomaculatus). It can be separated from Panaqolus dentex by having dark pigment on membrane and branched rays of all fins, as well as a smaller interorbital width (29.4-33.2% HL, mean 31.6, vs. 38.7), a shorter pectoral spine (29.8-31.3% HL, mean 30.3, vs. 34.8) and a greater caudal peduncle depth (12.0-13.4% SL, mean 12.9, vs. 10.8). It is readily distinguished from Panaqolus nocturnus by having larger eye (orbit length 18.8-20.8% HL vs. 13.7-15.9). Aquarium care: Peaceful in the aquarium but not suitable for planted tanks as they are plant eaters. Tank set-up should contain wood of some description as the Panaques need this in their diet. Plants will not work too well as they will be eaten so plenty of wood scattered around the tank with a few caves for spawning activities on a sand or small rounded gravel bed will do just fine. Provide strong aeration due to the higher temperatures involved. Diet: All Panaques and also the Panaqolus genera are wood eaters so would need this in an aquarium set-up. Feed also vegetable foods such as cucumber, courgette (zucchini) and sinking tablets. Sexual differences: Mature males have longer odontodes on the pectoral-fin spine and on the caudal peduncle. Remarks: The differences between the Panaqolus and the Panaque genera is that the latter has an oval shaped mouth and the jaws have very large spatulate teeth with a single cusp, arranged in a v form and Panaqolus have a small number of spatulate teeth and are also a smaller genus. Remarks: Found in main river channel on a stony substrate at two meters depth. Collected together with the hypostomins Hemiancistrus medians, Peckoltia otali and Pseudancistrus barbatus, and with the loricariins Harttia guianensis, Loricaria cataphracta and Rineloricaria stewarti

Common Name:







South America: Antecume Pata in upper Maroni River basin, French Guiana.


9.0cm (3½ins)


25-29°c (77-85°f.)




Fisch-Muller, S., J.I. Montoya-Burgos, P.-Y. Le Bail and R. Covain, 2012. Diversity of the Ancistrini (Siluriformes: Locariidae) from the Guianas: the Panaque group, a molecular appraisal with description of new species. Cybium 36(1):163-193.
Froese, R. and D. Pauly. Editors. 2018.FishBase. World Wide Web electronic publication. www.fishbase.org, ( 02/2018 )



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