well what are you planning to put in?And if you have a tank,what size is it?Native fish need cover.Rocks,driftwood,and plants can provide secuity.Sand can be a fine substrate if you want it to look natural,otherwise you can add gravel(never kept natives in bare bottom).A strong filteration system especially!Many larger native species produce tons of waste.Certainly canister filters,And I wouldn't try any other filter type,except for pond filters.Depending on what species you choose,however,will effect your tank size.