Do Mississippi River oxbow lakes really get restocked with fish when the

Oxbows on the river side of levee get floodwater but none one the "dry" side of levee.

Lately the only thing it seems they get restocked with is asian carp.

One advantage is that all the extra land the floodwater covers gives the fish "fresh" area to forage.

I know the lower Miss River (Vicksburg to N.O.) holds a lot of bass. I've heard of people pulling up hoop nets full.

I do a lot of fishing on an oxbow that floods a lot and 100's of thousand of acres of farm land flood also. I can't even begin to estimate how many 14-16 inch "football" bass are pulled out of some of the backwater areas between the lake and River. I know I've pulled a couple hundred out and don't fish the area near as much as some.

On a slow fall some beaver ponds end up full of bass when the water falls. Other times on a fast fall it's like all the bass haul butt with the water and get out of there.

So, to answer the question in Op, I don't think resident fish leave when it floods but new fish come in for sure