I agree with ruud; aquarium scissors are handy when cutting
carpet plants or shaping a "bush" since they're curved. They also don't have plastic that could (probably won't but
could) be toxic. Their protective coating over the stainless steel allows for them to be used frequently in water without getting rusted. But then again, they are like $10. Normal scissors, if you're careful, can be just fine. They're not curved and may rust but meh...at least they're cheaper so you can buy more for the same price. Really the choice is yours
Scaping Scissors
Pros: won't rust, curved, no plastic, sturdy, long
Cons: costly, and curved isn't for everyone
Normal Scissors
Pros: cheap, easily replaceable, straight is best for some plants
Cons: may rust, contains plastic not meant for fish, not curved, usually shorter, may be cheap quality