Is this the nts format you are referring to? readland.nts: Read landmark data matrix from nts file in geomorph: Geometric Morphometric Analyses of 2D/3D Landmark Data
You can read this previous thread related getting data into MorphoJ format and perhaps modify this example code to make it work for nts format.
Short answer is there is no immediate way of converting fcsv to nts, without a script.