It is not entirely clear what Amos means with these hooks.1 Most probably the Hebrew does not refer to fishhooks but some other implement used to hook cattle and control them. Having just spoken about cows (Amos 4:1), he would not be making much sense to now talk about fish.
2 The Lord GOD has sworn by his holiness that, behold, the days are coming upon you, when they shall take you away with hooks, even the last of you with fishhooks.