Table 1 in A new species of Corydoras Lacépède, 1803 (Siluriformes: Callichthyidae) from the río Madre de Dios basin, Peru

Table 1. Morphometric data of Corydoras knaacki. N = number of specimens and SD = standard deviation. NHolotypeLow-HighMean±SDStandard length (mm)2035.617.2-36.927.8±6.4Percentages of standard lengthDepth of body2040.238.9-45.742.1±1.9Predorsal distance2052.251.0-56.153.0±1.4Prepelvic distance2047.845.4-52.248.8 ±2.1Preanal distance2082.679.9-84.881.9±1.5Preadipose distance2086.284.3-88.686.3±1.1Length of dorsal spine2025.818.4-34.326.8±3.7Length of pectoral spine2029.523.3-34.329.6±2.8Length of adipose-fin spine207.96.8-10.48.3±1.0Depth of caudal peduncle2015.215.2-18.316.4±0.8Length of dorsal-fin base2019.715.1-20.118.3±1.4Dorsal to adipose distance2021.315.5-25.219.7±2.6Maximum cleithral width2030.128.3-32.230.1±1.3Head length2046.145.3-49.547.3±1.4Length of maxillary barbel178.48.4-14.011.3±1.9Percentages of head lengthHead depth2083.579.5-91.184.7±3.3Least interorbital distance2034.130.8-36.433.1±1.4Horizontal orbit diameter2021.320.5-26.723.9±1.9Snout length2034.131.2-37.134.4±1.5Least internarial distance2020.111.1-20.817.2±2.4表1 克氏兵鲶（Corydoras knaacki）的形态测量数据。其中N代表标本数量，SD代表标准差。 标准体长（mm）20 35.6 17.2-36.9 27.8±6.4 占标准体长百分比： 体高20 40.2 38.9-45.7 42.1±1.9 背前距20 52.2 51.0-56.1 53.0±1.4 腹前距20 47.8 45.4-52.2 48.8±2.1 臀前距20 82.6 79.9-84.8 81.9±1.5 脂鳍前距20 86.2 84.3-88.6 86.3±1.1 背鳍棘长20 25.8 18.4-34.3 26.8±3.7 胸鳍棘长20 29.5 23.3-34.3 29.6±2.8 脂鳍棘长20 7.9 6.8-10.4 8.3±1.0 尾柄高20 15.2 15.2-18.3 16.4±0.8 背鳍基长20 19.7 15.1-20.1 18.3±1.4 背鳍至脂鳍距20 21.3 15.5-25.2 19.7±2.6 最大匙骨宽20 30.1 28.3-32.2 30.1±1.3 头长20 46.1 45.3-49.5 47.3±1.4 上颌须长17 8.4 8.4-14.0 11.3±1.9 占头长百分比： 头高20 83.5 79.5-91.1 84.7±3.3 最小眶间距20 34.1 30.8-36.4 33.1±1.4 水平眶直径20 21.3 20.5-26.7 23.9±1.9 吻长20 34.1 31.2-37.1 34.4±1.5 最小鼻间距20 20.1 11.1-20.8 17.2±2.4