Please welcome Eyoyo Underwater Fishing Cameras.https://amzn.to/3siEgXn
I think most of the pumps are 12 volt ..can you provide an actual model ?https://www.xylem.com/en-us/brands/rule/rule-products?page=1&pagesize=24¤tpageid=25392&categoryid=1142&showcompareoptions=False
I use this pump to drain water from boats, canoes and kayaks, as well as to circulate water in a big cooler that holds my minnows. It runs on DC, but comes with an AC adapter so you can plug it in if needed. A thirty cent screen designed for your garden hose covers the intake, and plastic tubing is cheap by the foot at my local Ace store. If you rig a power panel, you can run both your depth finder AND the bilge pump off the same battery. https://www.surpluscenter.com/Water-Pumps/Submersible-Pumps/12-Volt-DC-Submersible-Impeller-Pump-w-115-Volt-AC-To-12-Volt-DC-Adapter-2-1443.axd
I really don't know...I imagine it would, but it also would pull the batt down fast, I'd think. A standard 750 GPH bilge pump has a 2.5 amp draw. Any reason why you can't use a 12V? Most are same length, just wider and a tad heavier.
The intake must be below the water line or your pump will constantly be working to prime the pump and could burn up quick if ran dry a lot. For times when you are not using the live well or pump you could find a rubber stopper plug so the well remains dry.