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Gladioglanis anacanthus Rocha, de Oliveira & Rapp Py-Daniel, 2008 |
Image contributors to this species: |
Leandro Sousa (2) |
ScotCat Sources: |
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Other Sources: |
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Relevant Information: |
Description: Dorsal spines (total): 0; Dorsal soft rays (total): 6; Anal soft rays: 22 - 25. Differs from all other species of the genus Gladioglanis by the following characters: absence of dorsal-fin spine and spinelet absent; first dorsal-fin ray (homologous to spine) flexible, unbranched, followed by five branched dorsal-fin rays; pectoral-fin spine 5.8-6.1% of SL; pectoral spine with 5 dentations on anterior side and 4 on posterior; anal fin with 22-25 rays; round profile of the head in dorsal view; first pterygiophore of dorsal fin in contact with neural spine of eighth vertebra; both caudal-fin lobes with 13 rays; and total vertebrae 60. Body shape (shape guide): elongated (Rocha, M.S, et al. 2008). Habitat: Found in flooded forest on the border of the lake, in a shallow (up to 0.5 m) marginal area on a deep mat of leaf litter as substrate. Also collected on leaf litter along the shore of the lake. Aquarium Care: Not recorderd as this is quite a rare species. Etymology: The genus name Gladioglanis: gladius (L.), sword, referring to strong and massive pectoral spine of G. machadoi, ancient name for a silurid catfish (probably Silurus aristotelis) dating to Aristotle, often used as a general term for catfish. The specific name anacanthus: Is derived from the Latin an (absence) and canthus (spine) in allusion to the absence of its dorsal-fin spine. |
Common Name: |
None |
Synonyms: |
None |
Family: |
Heptapteridae |
Distribution: |
South America: Known only from the type locality, Lago do Mamão, rio Aripuanã basin in Amazonas, Brazil. |
Size: |
2.5cm. (1ins) |
Temp: |
23-26°C (72-79°F) |
p.H. |
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6.0-7.2. |
IUCN Red List |
Gladioglanis anacanthus was recently described (2008) based on two specimens and is known only from the type locality on Mamão Island, Aripuanã River basin, Amazonas, Brazil, where several hydroelectric projects are planned. The species is collected in flooded forest environments, in shallow marginal areas and leaf litter substrate. It is possible that G. anacanthus occurs in other areas; however, there is insufficient information on its geographic distribution, biology, and population to allow for the application of criteria and the assessment of its conservation status. Therefore, Gladioglanis anacanthus was categorised as Data Deficient (DD), (IUCN 2022). |
Reference: |
Chico Mendes Institute
for Biodiversity Conservation (ICMBio). 2022.
Gladioglanis anacanthus. The IUCN Red List
of Threatened Species 2022. |
Family: Heptapteridae Back to Ident-A-Cat Click on Thumbnails |
Gladioglanis anacanthusHolotype-live specimen |
 Gladioglanis
anacanthusHead view-holotype-live specimen |
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