More than one discus is called "disci." This term is derived from the Latin plural form of the word "discus." In contexts such as sports, multiple discus might also simply be referred to as "discuses."
more than one lynx is call lynxes
you call them possums if your talking about more than 1
More than one fisherman is fishermen
More than one platypus is two or more platypuses. The plural is not 'platypi'.
Fish
swans
Ants
A wide range of materials are used to make athletic discus. Generally a metal rim and a metal core is used to gain the weight. The main materials in use are :Plastic DiscusAluminum DiscusWooden DiscusRubber Discus
its just fishermen
Pegasi I think.
Polygamy.
two goats