Lot of little catfish on little shad

I don't take time to discuss all the little catfish that I catch on yoyo's - off my fishing pier.

Just for example, I got two tonight - between 9PM and 11PM - and one was about 1.5 lbs (almost big enough to keep). However most are around a pound or less - in fact in the last three nights I've released 6 small ones (3 / Tuesday - 1 / Wednesday - 2/tonight (so far)

Main reason I'm adding this post is to mention that most of these were on shad or shad clusters like the 4 lb the other day - actually 4 on shad - 2 on magic bait - and I only put out one hook for each of these baits. Oh well this is time of year when shad bait seems to pick up - the cooler the water gets - the better shad bait seems to work so I plan to use more and more shad in next month or two.