I think this is a crescent gunnel??? I thought it was an eel. It was hiding under a rock as the tide went down
Found tidepooling
Maybe a Pholis clemensi (Longfin Gunnel)? This 3" fish was so small and thin we first thought it was a red ribbon worm. It was out of the water during the minus tide and gasping for air. We tried to move it to the water without touching it.
Found while tidepooling