And cherries were ceries from French, leading to the singular form cherry. Lots of neat little things like this.
replySwedish does a similar thing where it takes the plural of an English word as the singular Swedish loanword.
replyKex = biscuit, from "cakes"
Keps = hat, from "caps"
And peas was both singular and plural like fish.
reply"I ate a single peas" "I ate many peas"
People thought it was a mistake and generated "pea" for a new singular.