Unlike some of its immediate neighbors in the Texas Highland Lakes reservoir system, Lake Marble Falls is not infested with hydrilla, a non-native invasive plant from Asia thought to have been introduced to the U.S. via the tropical fish industry. Lake Marble Falls has been stocked with several species of native fish intended to improve the utility of the reservoir for recreational fishing. Fish present in Inks Lake include largemouth bass, catfish, and sunfish. Lake Marble Falls boasts being in the "top 50" as far as Record Stripers Striped Bass in the Texas freshwater fish records. http://www.tpwd.state.tx.us/fishboat/fish/programs/fishrecords/freshwater/top50_striped.phtml
Invasive Species
Zebra mussels are an invasive species that are able to attach themselves to boats and can be spread through anthropogenic sources. Lake Marble Falls is one of two lakes in the San Gabriel River Basin that is found to have this infestation.[1]
Recreational uses
Most of the property bordering Lake Marble Falls is privately owned. Fishing and boating are popular recreational activities, including the annual Lake Marble Falls Lakefestdrag boat races.