This is the 8807th most frequent Polish word.
ry
"Ry" in Polish means "fishes" (plural form).
Here, 'Rydzyk' is used as a proper noun, being a specific person's surname.
Nie znam Rydzyka osobiście.
I do not know Rydzyk personally.
Here, 'ryb' (a variation of 'ryby') represents fish, showing the general context of sea animals.
Płetwy ryb są bardzo różnorodne.
Fish fins are very diverse.
Here, 'Ryż' refers to rice as a food item and does not relate to the previous usages.