Table 6 in Revision of the species of the genus Cathorops (Siluriformes: Ariidae) from Mesoamerica and the Central American Caribbean, with description of three new species

Table6. Morphometrics for Cathorops melanopus. Standard length is expressed in millimeters, other measurements are percents of standard length. nMeanRangeStandard length (mm)7-113.0-188.0Head length222.722.3-23.0Snout length25.45.3-5.5Distance between anterior nostrils24.13.6-4.4Distance between posterior nostrils24.84.4-5.1Distance between anterior nostril to orbit26.26.2-6.2Distance between posterior nostril to orbit24.54.5-4.5Orbital diameter74.84.5-5.0Interorbital distance711.711.1-12.1Maxillary barbel length730.527.8-32.8External mental barbel length720.419.2-23.4Internal mental barbel length712.911.8-13.7Distance from snout to maxillary barbel21.21.1-1.3Distance from snout to external mental barbel24.24.2-4.3Distance from snout to internal mental barbel23.63.6-3.6Mouth width79.18.9-9.7Lower-jaw length21.51.1-1.8Premaxilla length21.51.3-1.7Premaxilla width25.55.1-5.8Distance between accessory tooth plates24.44.3-4.4Length of accessory tooth plates22.52.3-2.9Width of accessory tooth plates20.80.7-0.9Width of cephalic shield at lateral ethmoid area211.411.4-11.4Width of cephalic shield at frontals area26.46.4-6.5Width of cephalic shield at epioccipital area211.211.2-11.2Width of cephalic shield at supracleithrum area216.816.7-16.9Distance between lateral ethmoid and supracleithrum219.519.3-19.6Distance between snout and post. margin of dorsomedian groove of neurocranium218.517.9-19.1Supraoccipital process length210.310.3-10.4Supraoccipital process width62.92.6-3.4Nuchal-plate length26.66.6-6.6Nuchal-plate width27.07.0-7.1Body depth217.116.7-17.5Body width219.819.6-20.1Distance from snout to pectoral fin219.719.1-20.4Distance from snout to dorsal fin231.330.0-32.6Distance from snout to pelvic fin247.646.2-49.1Distance from snout to adipose fin272.071.9-72.1Distance from snout to anal fin262.961.6-64.3Caudal-peduncle height28.88.7-9.0Pectoral-fin spine length217.216.7-17.6Dorsal-fin spine length217.617.2-18.1Pelvic-fin base length24.34.3-4.4Pelvic-fin height615.313.7-17.8Adipose-fin base length29.79.2-10.1Adipose-fin height23.23.0-3.5Anal-fin base length220.519.9-21.1Anal-fin height214.013.6-14.3Caudal-fin upper lobe length231.531.1-32.0Caudal-fin lower lobe length229.829.7-29.9