New species of Characidium (Characiformes: Crenuchidae) from the Rio Tapajós and Rio Xingu drainages, Pará, Brazil
Author
Mendonça, Marina B.
Author
Netto-Ferreira, Andre L.
text
Zootaxa
2015
4021
1
187
194
journal article
39753
10.11646/zootaxa.4021.1.9
ec6acad1-5956-4ed1-878e-e976af3ad76d
1175-5326
241373
007198AD-00F9-4EF7-9105-3C90A918167E
TABLE 1. Morphometrics of Characidium nana. SD= Standart Deviation. | Holotype | Range | Mean | N | SD |
|---|
| Total length (mm) | 26.5 | 17.9 – 27.3 | 21.0 | 23 | |
|---|
| Standard length (mm) | 21.5 | 14.0 – 21.5 | 16.7 | 25 | |
|---|
| Head length (mm) | 5.6 | 4.1 – 5.8 | 4.6 | 25 | |
|---|
| Percentage of SL | | | | | |
|---|
| Body depth at dorsal-fin origin | 24.8 | 20.6 – 25.1 | 22.9 | 25 | 1.4 |
|---|
| Body depth at anal-fin origin | 16.2 | 12.9 – 16.2 | 15.0 | 24 | 1.0 |
|---|
| Body depth at caudal peduncle | 10.2 | 8.5 – 11.1 | 10.2 | 25 | 0.7 |
|---|
| Head length | 25.9 | 25.9 – 29.4 | 27.8 | 25 | 0.8 |
|---|
| Caudal peduncle length | 17.3 | 16.3 – 21.7 | 19.3 | 25 | 1.3 |
|---|
| Preanal distance | 71.4 | 71.3 – 76.4 | 73.2 | 25 | 1.4 |
|---|
| Predorsal distance | 47.5 | 47.5 – 51.1 | 49.0 | 25 | 0.8 |
|---|
| Prepectoral distance | 26.7 | 26.3 – 30.5 | 28.2 | 25 | 1.1 |
|---|
| Prepelvic distance | 47.9 | 47.4 – 52.7 | 50.4 | 25 | 1.5 |
|---|
| Anal-apex distance | 87.9 | 87.9 – 92.5 | 89.8 | 24 | 1.4 |
|---|
| Body width | 10.2 | 9.1 – 11.6 | 10.4 | 25 | 0.8 |
|---|
| Percentage of HL | | | | | |
|---|
| Snout length | 20.8 | 19.0 – 23.1 | 20.6 | 25 | 1.1 |
|---|
| Orbital diameter | 36.4 | 36.4 – 42.1 | 38.6 | 25 | 1.7 |
|---|
| Cheek depth | 8.1 | 7.5 – 12.0 | 9.7 | 25 | 1.3 |
|---|
| Anterior naris–orbit | 9.7 | 6.2 – 9.8 | 8.4 | 25 | 1.0 |
|---|
| Posterior naris–orbit | 3.1 | 2.2 – 4.4 | 3.3 | 25 | 0.6 |
|---|
| Snout–maxillary tip | 21.9 | 20.5 – 24.7 | 22.4 | 25 | 1.2 |
|---|
| Interorbital distance | 28.4 | 26.3 – 31.3 | 28.8 | 25 | 1.4 |
|---|