I figured out my problem. The crayfish I had in the tank was the culprit! I separated the Gouramis this afternoon, and later in the day I came back to find the crayfish standing over clown loach fins.
I had experience with 2 "crawfish" that appeared to be the same type. One was red and the other was blue, and both were non-aggressive to any of the fish I had them with. Those "crawfish" had one huge claw and one smaller claw.
The "crayfish" in my tank this time around appeared more like a lobster with both claws the same size, he was greyish-brown. I now have him separated from my 29.
Hard lesson to learn, but thanks for all the help!
29 Gallon (30x12x18)
2 Blue Gouramis, 3 Giant Danios, 3 Clown Loaches, 1 Dalmation Molly, 2 Plecostomus