I have some basic undestanding of how ethereum works but I'm not sure about transaction fees on stablecoins like Tether and other tokens running on ethereum.

So on ethereum when your sending tether your sending tether including the ethereum gas fee.

So my question might be a bit newbish but do you need besides tether in your wallet also ether for paying gas, or in other words you need two?

Im not aware of how token representation with ether etc works, and I also don't intent to learn more about ethereum but it was an question which got my attention.