Red and spotted handfish morphometrics

Adult and sub-adult Red handfish (Thymichthys politus) and Spotted handfish (Brachionichthys hirsutus) preserved specimens and underwater images were used for analysing morphometrics (comprising of specimens from the CSIRO Australian National Fish Collection and underwater images). Individuals were measured for the morphological traits using electronic callipers (±0.1 mm) for preserved specimens and using Image J software for digital records. Note digital image size calibration occurred using a ruler in images or from size taken in situ. The purpose was to investigate whether external morphometrics could be used to determine sex in handfishes.本数据集使用红手鱼（Thymichthys politus）与斑点手鱼（Brachionichthys hirsutus）的成体及亚成体馆藏标本与水下影像开展形态测量学分析，本次分析的样本涵盖来自澳大利亚联邦科学与工业研究组织（CSIRO）国家鱼类馆藏的标本及水下影像资料。针对馆藏标本，研究人员采用精度为±0.1 mm的电子游标卡尺测量其形态性状；数字化影像的相关测量则通过Image J软件完成。注：数字化影像的尺寸校准通过影像内附带的标尺或原位采集的尺寸数据实现。本研究旨在探究外部形态测量学特征是否可用于判定手鱼的性别。