Most anglers fishing trout sized species, lightweight bass, and panfish will want a 5 weight. Most rods are 9' long and graphite, but this isn't always the best. Shorter rods are generally more accurate and easier to cast at ranges under 45' which is where 90% of the fish get caught. Shorter rods don't tend to fish weighted wet flies, or nymphs, quite as effectively. Anglers fishing creeks usually use 1-3 weight rods.