Taxonomy of Finfish

2.3.10 Other Measurements

D1h Anterior dorsal height (distance from insertion to tip of longest spine)

D2h Posterior dorsal height (distance from insertion to tip of longest spine)

Ph Pectoral fin length

Vh Ventral fin length

Ah Anal fin height

Ch Dorsal caudal fin length

Ch’ Ventral caudal fin length

Ch’’ Greater caudal fin length

Ig Greatest iris diameter

Eg Greatest pupil diameter

g Greatest girth

VV Length of interventral flap

NN’ Spread caudal distance

All measurements should be taken in percent of standard length or fork length in mm. For computation, a factor should be found out by dividing 100 with standard length. Then this factor has to be multiplied with each morphometric character for a single specimen to get percentage of standard length in millimeters (mm). The same procedure has to be made for all the specimens of a species that are studied. From this range, mean, standard deviation and standard error and confidence interval ranges can be computed for each morphometric characters in a species. To obtain full information, range of overlapping, overlapping ratio, range of extreme ratio and percentage of overlapping ratio of all body proportions should be calculated in all combinations (morphometric characters) for closely related species or species coming under same genus.