Honestly, I love my fish and all my pets, but I think this may be a case where you just have to hope for the best. Get the pets you can move easily to safety without risking yourself or your family and leave it at that. How many fish do you have? If it's just the one, then I'd say keep one of those plastic breeder boxes next to or hanging in the aquarium so you can use it to quickly scoop your fish out and go. If it's a true emergency and you can't scoop him on the first try, leave him. Your safety is more important.
Bettas: Roland, Belle, Snow White, Polo, Elise, and Titan. | 120 gallon community tank | 55 gallon angelfish tank | 20 gallons of guppies