$ sudo apt-get update
$ sudo apt-get install fillets-ng-data 

fillets-ng-data is installed in your system.

Make ensure the fillets-ng-data package were installed using the commands given below,

$ sudo dpkg-query -l | grep fillets-ng-data *

You will get with fillets-ng-data package name, version, architecture and description in a table

fillets-ng-data package basic information: