"I also have two 3-inch gouramis; they seem too small to eat an inch long shrimp." Ahem, They don't, at least all in one bite! :) I've kept Gouramis for years. Great fish, but, they will eat anything that isn't half as big as they are or fast enough to get out of the way. They are not particularly mean or aggressive, its just that a slow moving wiggly little shrimp can be so... tempting! Ray