祥 is built from the 礻 (altar / spirit (left)) and 羊 components.
It belongs to a phonetic family with 様, 詳, and 翔 — they share the 羊 component and the reading ショウ.
A common word using 祥 is 不祥事 (ふしょうじ), meaning “scandal; impropriety”.
Don't confuse it with 洋, 詳, and 様.