What is a "choggie"?

[Jim in CT]

On Saturday, some college buddies and I did a trip on the SNAPPA out of Pt Judith (which is a beautiful 6-pack boat with a very nice captain). We were fishing for porgies and sea bass, catching mostly porgies. I caught what the capt called a "choggie", which the capt said would be a great sea bass bait, and he was right, we caught lots of sea bass on the chunks of that "choggie".

So, by what other names does a "choggie" go by? It was maybe a foot long, reddish-brown...