Or (fully) dag (Nehemiah 13:16) {dawg}; from
dagah; a fish (as prolific); or perhaps rather from
da'ag (as timid); but still better from
da'ag (in the sense of squirming, i.e. Moving by the vibratory action of the tail); a fish (often used collectively) -- fish.
see HEBREW dagah
see HEBREW da'ag
see HEBREW da'ag