| Species (N=206) | GC (%) | AT (%) | G (bases) | C (bases) | A (bases) | T (bases) | Maximum lifespan (yrs) |
|---|---|---|---|---|---|---|---|
| Catostomus commersonii | 41.9 | 58.1 | 90 | 57 | 116 | 88 | 12.0 |
| Chanos chanos | 45.3 | 54.7 | 104 | 54 | 109 | 82 | 15.0 |
| Chelmon rostratus | 41.8 | 58.2 | 94 | 52 | 125 | 78 | 10.0 |
| Chelon labrosus | 46.4 | 53.6 | 110 | 52 | 107 | 80 | 25.0 |
| Clupea harengus | 47.9 | 52.1 | 98 | 69 | 106 | 76 | 22.0 |
| Clupea pallasii | 46.7 | 53.3 | 97 | 66 | 107 | 79 | 19.0 |
| Clupeonella cultriventris | 47.9 | 52.1 | 101 | 66 | 108 | 74 | 5.0 |
| Cololabis saira | 40.1 | 59.9 | 95 | 45 | 123 | 86 | 2.0 |
| Coregonus clupeaformis | 48.4 | 51.6 | 111 | 58 | 101 | 79 | 50.0 |
| Coregonus nasus | 48.7 | 51.3 | 112 | 58 | 101 | 78 | 15.0 |
| Cottus poecilopus | 51.3 | 48.7 | 114 | 65 | 104 | 66 | 8.0 |
| Ctenopharyngodon idella | 45.3 | 54.7 | 105 | 53 | 94 | 97 | 21.0 |
| Culaea inconstans | 47.3 | 52.7 | 116 | 50 | 102 | 83 | 2.0 |
| Cycleptus elongatus | 41.8 | 58.2 | 90 | 56 | 111 | 92 | 13.0 |
| Cymatogaster aggregata | 47.0 | 53.0 | 109 | 55 | 115 | 70 | 8.0 |
| Cyprinella lutrensis | 42.7 | 57.3 | 93 | 56 | 106 | 94 | 2.0 |
| Cyprinella spiloptera | 44.7 | 55.3 | 94 | 63 | 107 | 87 | 5.0 |
| Cyprinus carpio | 43.6 | 56.4 | 103 | 50 | 94 | 104 | 47.0 |
| Dallia pectoralis | 43.6 | 56.4 | 108 | 44 | 121 | 76 | 8.0 |
| Danio rerio | 38.2 | 61.8 | 78 | 56 | 115 | 102 | 5.5 |
| Dicentrarchus labrax | 53.6 | 46.4 | 124 | 63 | 100 | 62 | 15.0 |
| Dorosoma cepedianum | 46.1 | 53.9 | 102 | 59 | 108 | 80 | 6.0 |
| Dorosoma petenense | 43.6 | 56.4 | 99 | 53 | 111 | 86 | 4.0 |
| Elassoma zonatum | 42.1 | 57.9 | 94 | 53 | 120 | 82 | 3.0 |
| Engraulis encrasicolus | 48.7 | 51.3 | 101 | 69 | 104 | 75 | 3.0 |
| Engraulis japonicus | 47.6 | 52.4 | 100 | 66 | 105 | 78 | 3.0 |
| Epinephelus areolatus | 48.4 | 51.6 | 112 | 57 | 107 | 73 | 15.0 |
| Epinephelus coioides | 45.0 | 55.0 | 107 | 50 | 115 | 77 | 22.0 |
| Erimyzon oblongus | 44.1 | 55.9 | 90 | 64 | 110 | 85 | 6.0 |
| Esox lucius | 45.6 | 54.4 | 111 | 49 | 110 | 81 | 30.0 |
| Etheostoma radiosum | 47.3 | 52.7 | 103 | 63 | 118 | 67 | 4.0 |
| Euthynnus affinis | 51.3 | 48.7 | 121 | 58 | 96 | 74 | 10.0 |
| Gadus morhua | 42.4 | 57.6 | 94 | 54 | 121 | 80 | 25.0 |
| Gadus ogac | 42.7 | 57.3 | 94 | 56 | 119 | 82 | 12.0 |
| Galaxiella nigrostriata | 37.5 | 62.5 | 81 | 50 | 127 | 91 | 1.0 |
| Gambusia affinis | 43.0 | 57.0 | 101 | 49 | 118 | 81 | 3.0 |
| Gasterosteus aculeatus | 46.7 | 53.3 | 107 | 56 | 109 | 77 | 8.0 |
| Gila robusta | 45.6 | 54.4 | 99 | 61 | 103 | 88 | 8.0 |
| Gobio gobio | 44.6 | 55.4 | 99 | 57 | 103 | 91 | 8.0 |
| Harengula jaguana | 49.6 | 50.4 | 112 | 61 | 111 | 65 | 3.0 |