There are many different fish species found in the waters of Lake Nimrod. Some of these fish include catfish, bluegill, bass, and crappie. Anglers have become accustomed to large "slab" crappie tugging on their hooks and making their bobbers dance for year-around angling on Nimrod.

The Arkansas Game and Fish Commission have the responsibility and propagation of native and introduced fish species. The U.S. Army Corps of Engineers and the Arkansas Game and Fish Commission have cooperated at various times in the past on fishery management programs on Nimrod Lake.

The U.S. Army Corps of Engineers and Arkansas Game and Fish Commission conducted a fishery restoration project on Nimrod Lake in 1999. Part of this project included placing bundles of small hardwood trees for fish attractors. The attractors were then marked with buoys and maps were made.