Fishing tips (dont do these mistakes)

I have done everything i could the last island will open after 14feb, i want you all to be careful of certain things while fishing, dont ever try to farm and buuld your fish skill tree in start jist do missions and follow the quests, the cost of fish will increase from 100-5000 so its aloot better if you start building skill tree when you reach latest island, unless you will waste aloot of stuff, every dock have its own shop with discount and non discount items meaning same thing will cost less and high but less cost will have low limited items, so first buy low cost things and then if you have no choice buy high limit things, do no buy the 1st 2 itmes from docks they are very costly wait for last island to open then buy them, thats all the tips i got for now