AquaticRepublic.com - Centromochlus akwe (Auchenipteridae) All Fishes

Juvenile
Holotype
Holotype, dorsal view
Holotype, ventral view
Alternate color pattern
Alternate color pattern, dorsal view
Alternate color pattern, ventral view

All Fishes Data Sheet
Scientific Name	**Centromochlus akwe** Coelho, Chamon & Sarmento-Soares, 2021
Common Name
Type Locality	Javaés River, Ilha do Bananal, Pedral da Sanbaíba, Pium, Tocantins, Brazil, 10°00'01"S, 50°01'29"W.
Pronunciation	cent row MOCK luss
Etymology	Centromochlus: From the Greek kenteo, meaning sting and mochlos, meaning lever or crowbar; in reference to the long spines. akwe: Named in honor to the Akwê (Xerente self-denomination) indigenous people.
Species Information
Identification	Centromochlus akwe differs from other Centromochlinae by having a vermiculated color pattern on the dorsum (vs. dorsum uniform in all Centromochlinae except Tatia brunnea, T. dunni, and T. meridionalis). The new species is distinguished from these three species by having eye ventrolaterally displaced on head in a way that almost the entire eye is visible in ventral view (vs. eye displaced dorsolaterally and not visible in ventral view). C. akwe is diagnosed from other Centromochlus by having the pectoral-fin spine with dark bars, alternating with light bars (vs. pectoral-fin spine with light and uniform color in all Centromochlus). It is further distinguished from all congeners except C. carolae by the ventral surface of head moderate to largely pigmented (vs. ventral surface of head unpigmented or with few scattered dark chromatophores). It is distinguished from C. carolae by the presence of vermiculated color pattern or scattered chromatophores on lateral surface of the body that extends to the caudal peduncle (vs. lateral surface of the body with distinct demarcation between dark and light areas continuous posteriorly onto the caudal peduncle whereas the dark pigmentation extends nearly to the ventral midline in C. carolae), by lacking dark large and rounded blotches over a pale background on head and trunk (vs. present in C. schultzi); and by the smaller length of the dorsal-fin spine (18.1-27.1% of SL vs. more than 27% of SL in C. macracanthus, C. heckelii, C. existimatus), and pectoral-fin spine (24.2-32.2% of SL vs. more than 33% of SL in C. macracanthus, C. heckelii, C. existimatus).
Sexing	Mature males have a modified anal fin, similar to that of other Centromochlus.
General Remarks	When this species has been collected in the past, it was usually misidentified as Centromochlus cf. punctatus (Tatia punctata). C. akwe can be distinguished from T. punctata by having two openings in the cranial fontanel (vs. one) and by the last branched ray of the modified anal fin of nuptial males being slightly shorter than the penultimate ray in the new species (vs. last ray being rudimentary in T. punctata).
Habitat Information
Distribution	Amazon, Lower Amazon, Tocantins, Lower Tocantins, Araguaia, Javaés (click on these areas to find other species found there) Amazon, Lower Amazon, Tocantins, Upper Tocantins (click on these areas to find other species found there) Login to view the map.
IUCN Red List Category	Not Evaluated
Other Parameters	C. akwe is collected in clear water habitats with variable amounts of sediment.
Husbandry Information
Furniture	This species was found hidden in crevices within laterititic bedrock substrate covered by alluvial sediment.
Suggested Tankmates	Other species collected with C. akwe include Centromochlus schultzi, Tatia intermedia, Auchenipterichthys longimanus, Rhinodoras boehlkei, Platydoras armatulus, Rhamdia quelen, Leporacanthicus galaxias, Peckoltia vittata, P. sabaji, Parancistrus aurantiacus, Pseudacanthicus sp., and Spectracanthicus javae.
Breeding Reports	There is no breeding report.
Further Information
Reference	Zootaxa 4950 (no. 1), pp 150, Figs. 1-7.
Registered Keepers	There is no registered keeper.
Wishlists	Love this species? Click the heart to add it to your wish list. There is no wish to keep this species.
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Last Update	2025 Jan 02 00:48 (species record created: 2021 Mar 29 04:07)