Holotype: MZUSP 28809 57.9mm SL. Paratypes: MZUSP 28807 and 28808 48.0mm and 46.5mm SL; MAPA 2566 and 2567 54.0mm and 28.4mm SL; MFA 555, 874, 875, 876, 877, 878 59.7mm, 54.1mm, 51.6mm, 43.6mm, 37.5mm, 27.0mm SL; MCP 10523 51.0mm SL; ISBN 730 47.5mm SL; ZMA 119.409 (2 specimens) 59.2mm and 35.4mm SL; MZUSP 24486 45.4mm SL; MZUSP 28806 44.9mm SL.
Type locality: Caverna Passa Três, Rio São Vicente System, São Domingos, Goiás, Brazil (13o36’S, 46o23’W). Armoured catfishes assigned to A. cryptophthalmus have been found in four caves belonging to two different cave systems: Angelica and Bezerra caves which form the Angelica-Bezerra system, and Sao Vicente I cave and its tributary Passa Tres. This species coexists in Passa Tres with Ituglanis passensis (Trichomycteridae).
Within Caverna Passa Três this species is found together with the following other fishes: Astyanax scabripinnis (Characiformes, Characidae), and Hoplerythrinus unitaeniatus (Characiformes, Erythrinidae) (Trajano and De Souza 1994, Bichuette and Trajano 2003).
A member of the subfamily Hypostominae (Roxo et al. 2019).
A detailed molecular study by Roxo et al. (2019) showed that A. crytophthalmus is sister to A. ranunculus and that these two are sister to A. multispinis (which is itself polyphyletic). A. ranunculus is found in the same river basin, the Tocantins River, as A. cryptophthalmus and is reported to "Inhabit clear running water, without a strong current to a depth of 3 meters during dry season. Prefers narrow cracks of submerged rocks, small passages between superimposed rocks, or lives below flat rocks on the bottom". This behavior could esilly be seen as preadaptive (exaptive) for subterranean life (Muller et al. 1994) and A. ranunculus may be close to the most recent common ancestor.
In a contrasting study using the mitogenome of A. cryptophthalmus and an unidentified epigean species, Ancistrus sp., Mendes et al. (2019) suggested that the cave fish was evolved from the epigean fish and both should be considered the same species with A. crytophthalmus being a morphotype.
"Ancistrus cryptophthalmus is endemic to Brazil, known from only two cave systems in the karst area of São Domingos, Alto Tocantins, São Domingos-GO municipality: the Angélica-Bezerra system and the São Vicente system. The area of occupation is estimated to be less than 100 km2. These two systems do not have connectivity, and the populations present in São Vicente differ morphologically from the Angélica-Bezerra populations, representing two locations. In the Bezerra cave, the river is extremely silted due to deforestation upstream of the cave, reducing the quality of the habitat (food and spatial resources). In the Angelica cave there is intense visitation, which can also affect the quality of the habitat. Ancistrus cryptophthalmus was categorized as Endangered (EN) by the criterion B2ab (iii)."
MZUSP various material.
- Reis, R. E. (1986)
- Reis, R. E. (1987)
- Trajano, E. and de Souza, A. M. (1994)
- Trajano, E. (1994)
- Muller, S., Rapp Py-Daniel, L.H. and Zuanon, J. (1994)
- Sabino, J. and Trajano, E. (1997)
- Trajano, E. (2001)
- Bessa, E. and Trajano, E. (2001)
- Bessa, E. and Trajano, E. (2001)
- Trajano, E and Reis, RE (2002)
- Fernandez, L and Bichuette, ME (2002)
- Bichuette, M. E. and Trajano, E (2003)
- Armbruster, J.W. (2004)
- Reis, R.E., Trajano, E. and Hingst-Zaher, E. (2006)
- Trajano, E. and Bichuette, M. E. (2007)
- Felice, V., Visconti, M.A. and Trajano, E. (2008)
- Secutti, Sandro and Trajano, Eleonora (2009)
- Bastos, V.A.A., Ferreira, R.L., de Carvalho, D.C., Pugedo, M.L. and Pinto, L.D.A. (2013)
- Trajano, E, Gallao, J.E and Bichuette, M. E. (2016)
- Gallão, J.E. and Bichuette M.E. (2018)
- Bichuette, M.E., Gimenez, E.A., Arnone, I.S. and Trajano, E. (2018)
- Bichuette, M.E., Simões, L.B., Zepon, T., von Schimonsky, D.M. and Gallão, J.E. (2019)
- Roxo, F.F., Ochoa, L.E., Sabaj, M.H., Lujan, N.K., Covain, R., Silva, G.S.C., Melo, B.F., Albert, J.S., Chang, J., Foresti, F., Alfaro, M.E. and Oliveira, C. (2019)
- Splendore de Borba, R., Mariotto, S., Centofante, L., Zawadzki C.H. and Parise-Maltempi, P.P. (2019)
- Mendes, I.S., Prosdocimi, F., Schomaker-Bastos, A., Furtado, C., Ferreira, R.L., .Pompeu, P.S. and Carvalho, D.C. (2019)
|Reis, R. E.||Journal Article||1986||Uma nova especie de Ancystrus de caverna: o primeiro Loricariidae cego (Pisces, Siluriformes)|
|Reis, R. E.||Journal Article||1987||Ancistrus cryptophthalmus sp. n., a blind mailed catfish from the Tocantins river basin, Brazil (Pisces, Siluriformes,Loricariidae)|
|Trajano, E. and de Souza, A. M.||Journal Article||1994||Behaviour of Ancistrus cryptophthalmus an armoured blind catfish from caves of central Brazil, with notes on syntopic Trichomycterus sp. (Siluriformes, Loricariidae, Trichomycteridae)|
|Trajano, E.||Journal Article||1994||Comparative study of the brain and olfactory organ of the troglobitic catfish Pimelodella kronei (Ribeiro, 1907) and its putative ancestor P. transitoria (Ribeiro, 1912) (Siluriformes, Pimelodidae)|
|Muller, S., Rapp Py-Daniel, L.H. and Zuanon, J.||Journal Article||1994||Ancistrus ranunculus, a new species of loricariid fish (Siluriformes: Loricariidae) from the Xingú and Tocantins rivers, Brazil|
|Sabino, J. and Trajano, E.||Journal Article||1997||A new species of blind armoured catfish, genus Ancistrus, from caves of Bodoquena region, Mato Grosso do Sul, southwestern Brazil (Siluriformes, Loricariidae, Ancistrinae)|
|Trajano, E.||Journal Article||2001||Habitat and population data of troglobitic armored cave catfish, Ancistrus cryptophthalmus Reis, 1987, from central Brazil (Siluriformes: Loricariidae)|
|Bessa, E. and Trajano, E.||Journal Article||2001||Light recation and cryptobiotic habitats in armoured catfishes, genus Ancistrus, from caves in central and north-eastern Brazil|
|Bessa, E. and Trajano, E.||Conference Proceedings||2001||Light reaction and cryptobiotic habits in two cave-dwelling Brazilian armoured catfishes, genus Ancistrus (Siluriformes: Loricariidae)|
|Trajano, E and Reis, RE||Journal Article||2002||Geometric morphometric study of epigean and cave populations of armoured catfish genus Ancistrus from the Sao Domingos karst area, upper Tocantins basin, central Brazil (Siluriformes: Loricariidae)|
|Fernandez, L and Bichuette, ME||Journal Article||2002||A new cave dwelling species of Ituglanis from the Sao Domingos karst, central Brazil (Siluriformes: Trichomycteridae)|
|Bichuette, M. E. and Trajano, E||Journal Article||2003||Epigean and subterranean ichthyofauna from the Sao Domingos karst area, Upper Tocantins River basin, central Brazil|
|Armbruster, J.W.||Journal Article||2004||Phylogenetic relationships of the suckermouth armoured catfishes (Loricariidae) with emphasis on the Hypostominae and the Ancistrinae|
|Reis, R.E., Trajano, E. and Hingst-Zaher, E.||Journal Article||2006||Shape variation in surface and cave populations of the armoured catfish Ancistrus (Siluriformes: Loricariidae) from the São Domingos karst area, Upper Tocantins River, Brazil.|
|Trajano, E. and Bichuette, M. E.||Journal Article||2007||Population ecology of cave armoured catfish, Ancistrus cryptophthalmus Reis 1987, from central Brazil (Siluriformes: Loricariidae)|
|Felice, V., Visconti, M.A. and Trajano, E.||Journal Article||2008||Mechanisms of pigmentation loss in subterranean fishes|
|Secutti, Sandro and Trajano, Eleonora||Journal Article||2009||Reproductive behavior, development and eye regression in the cave armored catfish, Ancistrus cryptophthalmus Reis, 1987 (Siluriformes: Loricariidae), breed in laboratory|
|Bastos, V.A.A., Ferreira, R.L., de Carvalho, D.C., Pugedo, M.L. and Pinto, L.D.A.||Journal Article||2013||The cave environment influencing the lipid profile and hepatic lipogenesis of the fish Ancistrus cryptophthalmus Reis, 1987 (Siluriformes: Loricariidae)|
|Trajano, E, Gallao, J.E and Bichuette, M. E.||Journal Article||2016||Spots of high biodiversity of troglobites in Brazil: the challenge of measuring subterranean diversity|
|Gallão, J.E. and Bichuette M.E.||Journal Article||2018||Brazilian obligatory subterranean fauna and threats to the hypogean environment|
|Bichuette, M.E., Gimenez, E.A., Arnone, I.S. and Trajano, E.||Journal Article||2018||An important site for conservation of bats in Brazil: Passa Três cave, São Domingos karst area, with an updated checklist for Distrito Federal (DF) and Goiás state|
|Bichuette, M.E., Simões, L.B., Zepon, T., von Schimonsky, D.M. and Gallão, J.E.||Journal Article||2019||Richness and taxonomic distinctness of cave invertebrates from the northeastern state of Goiás, central Brazil: a vulnerable and singular area|
|Roxo, F.F., Ochoa, L.E., Sabaj, M.H., Lujan, N.K., Covain, R., Silva, G.S.C., Melo, B.F., Albert, J.S., Chang, J., Foresti, F., Alfaro, M.E. and Oliveira, C.||Journal Article||2019||Phylogenomic reappraisal of the Neotropical catfish family Loricariidae (Teleostei: Siluriformes) using ultraconserved elements|
|Splendore de Borba, R., Mariotto, S., Centofante, L., Zawadzki C.H. and Parise-Maltempi, P.P.||Journal Article||2019||Molecular discrimination of Ancistrus lineages (Siluriformes: Loricariidae) using barcode DNA tool|
|Mendes, I.S., Prosdocimi, F., Schomaker-Bastos, A., Furtado, C., Ferreira, R.L., .Pompeu, P.S. and Carvalho, D.C.||Journal Article||2019||On the evolutionary origin of Neotropical cavefish Ancistrus cryptophthalmus (Siluriformes, Loricariidae) based on the mitogenome and genetic structure of cave and surface populations|