Do fish have plural when they are alive?

Do fish have plural when they are alive?

Yes, jiaes
n. (noun)
Fish or fish.es
Any of numerous cold-blooded aquatic vertebrates of the superclass Pisces,characteristically having fins,gills,and a streamlined body and including specifically:
Any of various cold-blooded aquatic vertebrates having fins, gills, and linear forms, and especially including:
Any of the class Osteichthyes,having a bony skeleton.
Teleost: a member of the class teleost with a rigid skeleton
Any of the class Chondrichthyes,having a cartilaginous skeleton and including the sharks,rays,and skates.
Chondrichthys: any of various cartilaginous fishes of the class chondrichthys having a set of soft skeletons, including sharks, rays, and rays
The flesh of such animals used as food.
Fish: meat of such animals used as food
Any of various primitive aquatic vertebrates of the class Cyclostomata,lacking jaws and including the lampreys and hagfishes.
Any of various primitive aquatic, gnarless vertebrates of the class strongylostomata, including the lamprey and the blind eel
Any of various unrelated aquatic animals,such as a jellyfish,cuttlefish,or crayfish.
Aquatic animals: aquatic animals not directly related to fish, such as jellyfish, cuttlefish, or crayfish
Informal A person who is deficient in something:
A person who is deficient in something
a cold fish; a poor fish.
A conceited person; a wretch