Quintypch
group of mothers
A group of scholars
A crayfish is a crustacean that has a similar appearance to the shrimp. When referring to a group of crayfish you simply call them by the same name.
pee
Herd
A Heiramty
The paintings subjects maybe?
A group of 5 is called a quintet.
Pentology
A group of paintings go in a gallery.
How about a collection?
art
A quadriptych. :)
A collection.
triptych
A herd.
You would call a group of performers something different based on what they are performing, and how many of them there are. For example, a group of performers in a certain type of play could be referred to as a troupe, and a group of 5 musicians in a quintet.