The answer is absolutely yes. Why?
I strong recommend you that the suitable place to fish is at Draynor, which is west of the Lumbridge Castle. Remember always banking your fish. If you leave them in your inventory, you will soon run out of space.
They are great seafood for money making. Sell them anywhere for 50-100gp each. The cooked are always faster sellers. Therefore, you might want to have 40 cooking along with the fishing bank. This is great place for the HP and great GP as well. It's worth the time and you will become restorative when you sell the first bunch. 100 swordies at 200 GP each is quite a bit of change. To save time, you can buy runescape accounts with much gold directly.
Obviously, this is a pains taking work and costs quite a lot to go back and fourth banking it. So, it is better to be a member at this point. Unless you are only expect to raise your fishing level. Remember that farmer100 has awesome runescape accounts for sale. You could always teleport to Lumby.