You bet they do,I have fished for mullet in various places all over the world in harbours and estuaries.They are very fussy feeders and you can spend hours with them totally ignoring your bait,or they can suddenly go crazy and take whatever you throw at them,there's just no way to know when.Depending on where you are the best baits are bread or soft past,small harbour ragworms,cheese,tiny bits of shrimp or any number of other things as long as its small and soft.Hook sizes 6 to ten depending on bait of course,they have fairly small mouths. they can be found just about everywhere in the world between lattitudes 50 north and south.Oh, and they taste really good as long as they are caught somewhere reasonably clean.