I make them myself, but sometimes I'll buy them as something easy for dinner one night for them, but try not to too often cause they usually have quite a bit of added stuff. Here are a couple homemade ones you could try if your are interested though
https://weelicious.com/2008/07/03/blue-corn-chip-crusted-fish-sticks-with-red-pepper-coulis/
https://weelicious.com/2008/05/22/fish-sticks/