Question: What creature is swimming in the Dutch phrase "Visc flot aftar themo uuatare"?

Is "Probably the most famous sentence Hebban olla vogala nestas hagunnan, hinase hic enda tu, wat unbidan we nu (All birds have started making nests, except me and you, what are we waiting for), is dated around the year 1100, written by a Flemish monk in a convent in Rochester, England." the correct answer?
no