Revisionary study of the armored catfish Corydoras paleatus (Jenyns, 1842) (Siluriformes: Callichthyidae) over 180 years after its discovery by Darwin, with description of a new species
Author
Tencatt, Luiz Fernando Caserta
Universidade Estadual de Maringá. Programa de Pós-Graduação em Ecologia de Ambientes Aquáticos Continentais, Av. Colombo, 5790, 87020 - 900 Maringá, Paraná, Brazil
luiztencatt@hotmail.com
Author
Britto, Marcelo Ribeiro de
Universidade Federal do Rio de Janeiro, Museu Nacional, Departamento de Vertebrados, Setor de Ictiologia, Quinta da Boa Vista s / n, São Cristóvão, 20940 - 040 Rio de Janeiro, Rio de Janeiro, Brazil
mrbritto2002@yahoo.com.br
Author
Pavanelli, Carla Simone
Universidade Estadual de Maringá. Programa de Pós-Graduação em Ecologia de Ambientes Aquáticos Continentais, Av. Colombo, 5790, 87020 - 900 Maringá, Paraná, Brazil & Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura, Universidade Estadual de Maringá, Av. Colombo, 5790, 87020 - 900 Maringá, Paraná, Brazil
carlasp@nupelia.uem.br
text
Neotropical Ichthyology
2016
e 150089
2016-04-07
14
1
1
20
http://dx.doi.org/10.1590/1982-0224-20150089
journal article
315088
10.1590/1982-0224-20150089
727d7dad-e135-4802-a047-291990f521c6
1982-0224
13320653
Table 1. Morphometric data of Corydoras paleatus (n = 45) and holotype and paratypes of Corydoras froehlichi (n = 32). S.D.= standard deviation. | Corydoras paleatus | Holotype | Corydoras froehlichi |
|---|
| Low-High | Mean±S.D. | Low-High | Mean±S.D. |
|---|
| Standard length (mm) | 30.7-53.8 | 42.8±5.6 | 51.5 | 38.6-51.5 | 44.5±2.2 |
|---|
| Percents of standard length |
|---|
| Depth of body | 32.3-40.5 | 35.8±1.7 | 33.2 | 31.9-36.8 | 34.7±1.3 |
|---|
| Predorsal distance | 44.5-49.9 | 47.1±1.3 | 46.4 | 45.5-49.3 | 47.1±1.0 |
|---|
| Prepelvic distance | 42.9-55.0 | 47.3±1.9 | 44.7 | 41.6-49.1 | 45.4±1.4 |
|---|
| Preanal distance | 73.3-81.3 | 78.4±1.6 | 80.4 | 76.7-82.1 | 79.0±1.4 |
|---|
| Preadipose distance | 80.3-85.5 | 82.8±1.3 | 81.0 | 73.7-82.9 | 79.9±1.8 |
|---|
| Length of dorsal spine | 17.1-28.6 | 23.1±2.9 | 25.2 | 19.3-28.3 | 24.3±2.2 |
|---|
| Length of pectoral spine | 19.5-30.1 | 25.9±2.3 | 23.3 | 21.4-26.7 | 24.1±1.2 |
|---|
| Length of adipose-fin spine | 6.5-11.3 | 8.4±1.2 | 9.9 | 5.2-10.2 | 8.2±1.1 |
|---|
| Depth of caudal peduncle | 10.6-14.5 | 12.9±0.8 | 13.6 | 11.1-15.4 | 14.1±0.8 |
|---|
| Length of dorsal-fin base | 14.6-19.0 | 16.7±0.9 | 16.9 | 14.6-19.0 | 16.7±0.9 |
|---|
| Dorsal to adipose distance | 16.9-24.4 | 21.3±1.7 | 19.2 | 16.5-21.4 | 18.9±1.3 |
|---|
| Maximum cleithral width | 24.9-31.3 | 27.1±1.3 | 26.4 | 23.9-27.9 | 26.0±1.1 |
|---|
| Head length | 37.8-46.7 | 40.0±1.6 | 39.2 | 38.3-41.5 | 39.8±0.9 |
|---|
| Length of maxillary barbel | 8.7-22.8 | 16.1±2.8 | 6.0 | 4.2-14.8 | 8.2±2.3 |
|---|
| Percents of head length |
|---|
| Head depth | 69.5-92.6 | 83.2±3.8 | 79.2 | 75.5-85.4 | 79.9±2.9 |
|---|
| Least interorbital distance | 27.7-36.0 | 33.6±1.8 | 29.2 | 23.0-31.0 | 28.4±1.5 |
|---|
| Horizontal orbit diameter | 16.4-24.0 | 20.6±1.5 | 22.8 | 20.1-26.6 | 23.0±1.2 |
|---|
| Snout length | 28.2-35.9 | 32.3±1.6 | 33.2 | 31.8-38.6 | 34.8±1.8 |
|---|
| Least internarial distance | 12.3-18.5 | 15.7±1.4 | 14.9 | 9.3-16.8 | 14.5±1.3 |
|---|