Tab. 1 in A new species of Tetragonopterus (Characiformes: Characidae) from Central Amazon lowlands, Brazil

Tab. 1. Morphometric data of Tetragonopterus manaos. Range includes holotype. SD = Standard deviation.
HolotypeNRangeMeanSDStandard length (mm)64.12854.6-81.665.4-Percentages of standard lengthBody depth49.52847.5-54.952.42.0Predorsal length50.92849.0-53.050.80.9Prepectoral length32.12830.5-34.632.10.9Prepelvic length54.12850.4-56.754.01.5Preanal length69.52868.7-75.973.31.9Caudal-peduncle depth11.12810.4-12.211.50.4Caudal-peduncle length6.2284.3-7.16.00.7Pectoral-fin length26.22819.2-27.225.81.9Pelvic-fin length19.42814.1-22.419.12.1Dorsal-fin length39.82726.7-42.338.42.9Length of dorsal-fin base18.12816.3-21.519.21.0Anal-fin length18.42215.6-22.319.52.0Length of anal-fin base35.52830.8-35.634.11.3Distance from eye to dorsal-fin origin37.42835.4-40.137.81.2Distance from dorsal-fin origin to caudal-fin base55.32851.6-58.854.11.7Head length31.02828.8-32.330.50.9Head depth41.62835.5-45.141.72.1Percentages of head lengthSnout length18.92816.7-23.819.91.7Maxillary length55.32850.3-57.353.62.0Horizontal orbital diameter44.22843.6-50.546.81.9Least interorbital width33.02830.9-36.733.71.6

表1 马瑙斯四齿脂鲤（*Tetragonopterus manaos*）形态测量数据。测量范围包含正模标本。SD为标准差（Standard deviation）。

### 绝对长度指标（单位：mm）
| 测量指标 | 正模标本测量值 | 样本量（N） | 测量范围 | 均值 | 标准差（SD） |
|-------------------------|----------------|-------------|----------------|--------|--------------|
| 标准体长 | 64.1 | 28 | 54.6–81.6 | 65.4 | — |
| 头长 | 31.0 | 28 | 28.8–32.3 | 30.5 | 0.9 |
| 头高 | 41.6 | 28 | 35.5–45.1 | 41.7 | 2.1 |

### 以标准体长为基准的百分比指标
| 测量指标 | 正模标本测量值 | 样本量（N） | 测量范围 | 均值 | 标准差（SD） |
|-------------------------|----------------|-------------|----------------|--------|--------------|
| 体高 | 49.5 | 28 | 47.5–54.9 | 52.4 | 2.0 |
| 背前距 | 50.9 | 28 | 49.0–53.0 | 50.8 | 0.9 |
| 胸前距 | 32.1 | 28 | 30.5–34.6 | 32.1 | 0.9 |
| 腹前距 | 54.1 | 28 | 50.4–56.7 | 54.0 | 1.5 |
| 肛前距 | 69.5 | 28 | 68.7–75.9 | 73.3 | 1.9 |
| 尾柄高 | 11.1 | 28 | 10.4–12.2 | 11.5 | 0.4 |
| 尾柄长 | 6.2 | 28 | 4.3–7.1 | 6.0 | 0.7 |
| 胸鳍长 | 26.2 | 28 | 19.2–27.2 | 25.8 | 1.9 |
| 腹鳍长 | 19.4 | 28 | 14.1–22.4 | 19.1 | 2.1 |
| 背鳍长 | 39.8 | 27 | 26.7–42.3 | 38.4 | 2.9 |
| 背鳍基长 | 18.1 | 28 | 16.3–21.5 | 19.2 | 1.0 |
| 臀鳍长 | 18.4 | 22 | 15.6–22.3 | 19.5 | 2.0 |
| 臀鳍基长 | 35.5 | 28 | 30.8–35.6 | 35.5 | 1.3 |
| 眼至背鳍起点间距 | 37.4 | 28 | 35.4–40.1 | 37.8 | 1.2 |
| 背鳍起点至尾鳍基间距 | 55.3 | 28 | 51.6–58.8 | 54.1 | 1.7 |

### 以头长为基准的百分比指标
| 测量指标 | 正模标本测量值 | 样本量（N） | 测量范围 | 均值 | 标准差（SD） |
|-------------------------|----------------|-------------|----------------|--------|--------------|
| 吻长 | 18.9 | 28 | 16.7–23.8 | 19.9 | 1.7 |
| 上颌骨长 | 55.3 | 28 | 50.3–57.3 | 53.6 | 2.0 |
| 水平眼径 | 44.2 | 28 | 43.6–50.5 | 46.8 | 1.9 |
| 最窄眼间距 | 33.0 | 28 | 30.9–36.7 | 33.7 | 1.6 |