It is but it also counts as a government issued ID. If you move and your driver's license does not have your current address on it you can't use it to buy a gun.. However, you can go and buy a seasonal fishing license on-the-spot that now is a government issued ID that allows you to buy a gun.
Still kind of stupid but it has purposes other than just a game&fish tax.
Thats wild. The last time I bought a fishing license in my state, it was basically just a paper card with my name and an expiration date.
That is exactly what it is in most states. Just make sure you sign it or you will get a fine from Game&Fish if you present it not signed.