eel not eating

My snowflake eel has ate from since I bought him as a juvenile recently my heat shut off so he may be stress out from that and not eating because of it my puffer fish is still eating just fine and the eel has no marks or blemishes and he is acting fine other than not eating please help



tank specs

55 gallons

50 pounds of live rock

1 valentini puffer

1 rock flower nem

1 snowflake eel

all perams are fine other than salinity has been low for about a day