Species, GC (%), AT (%), G (bases), C (bases), A (bases), T (bases), Maximum lifespan (yrs) Acipenser dabryanus, 49.3, 50.7, 266, 207, 178, 309, 100.0, Acipenser ruthenus, 48.9, 51.1, 263, 207, 182, 309, 46.1, Acipenser schrenckii, 49.4, 50.6, 268, 207, 179, 307, 60.0, Acipenser stellatus, 49.4, 50.6, 265, 210, 180, 306, 27.0, Acipenser sturio, 49.4, 50.6, 266, 208, 177, 308, 100.0, Acipenser transmontanus, 49.3, 50.7, 267, 207, 180, 307, 104.0, Huso dauricus, 49.2, 50.8, 264, 208, 181, 306, 55.0, Huso huso, 49.3, 50.7, 279, 220, 196, 318, 118.0, Polyodon spathula, 49.6, 50.4, 267, 209, 178, 305, 55.0,