Age and growth of the longnose gar in Tuttle Creek Reservoir were studied. The 101 gars were aged from the branchiostegal rays. The fish length-branchiostegal length relationship was L = 174.21 + 25.74 B, where L = total fish length in mm and B = branchiostegal length in mm. Female gars grew faster than males. Growth increments for males for the first 6 years were 504.7, 123.7, 80.8, 48.6, 38.7, 22.8 mm; for females, for the first 8 years, 522.7, 164.1, 96.7, 64.5, 50.6, 59.7, 40.7, 20.7 mm. The length-weight relationship was Log W = -6.426 + 3.274 Log L, where W = weight in g and L = total length in mm. Growth of gars in Tuttle Creek Reservoir was greater than that reported in other areas.