gulf.
Hang out is a verb, hangout is a noun. One can hang out in a hangout.
They hangout at Crowley's
a collection of fish is called a school of fish
One might form a Google Hangout for banjo players by starting a hangout party at Google+. The banjo players can have face to face video calls together on a Google Hangout.
In the top left corner of the app there should be the Google+ logo. Click on it and it will open a side menu. On the menu there should be a button called "hangout". Clicking on that will allow you to use the hangout feature of Google+ (AKA video chat).
Just a fish.
A baby fish is called fry. A fish egg is called roe.
Newborn fish are called "fry".
It is best to hang out with friends who aren't mean to you. Friends who are mean to you are not your friends.
It is called a Remora fish.
A baby fish is called a FRY.
A group of fish is called a "School".