| Species (N=12) | GC (%) | AT (%) | G (bases) | C (bases) | A (bases) | T (bases) | Maximum lifespan (yrs) |
|---|---|---|---|---|---|---|---|
| Alosa alosa | 48.8 | 51.2 | 94 | 51 | 81 | 71 | 10.0 |
| Alosa pseudoharengus | 47.8 | 52.2 | 93 | 49 | 82 | 73 | 8.0 |
| Alosa sapidissima | 49.5 | 50.5 | 94 | 53 | 81 | 69 | 13.0 |
| Clupea harengus | 48.5 | 51.5 | 95 | 49 | 81 | 72 | 22.0 |
| Clupea pallasii | 48.5 | 51.5 | 95 | 49 | 81 | 72 | 19.0 |
| Clupeonella cultriventris | 49.8 | 50.2 | 93 | 55 | 82 | 67 | 5.0 |
| Dorosoma cepedianum | 52.9 | 47.1 | 100 | 57 | 75 | 65 | 6.0 |
| Dorosoma petenense | 50.2 | 49.8 | 97 | 52 | 74 | 74 | 4.0 |
| Harengula jaguana | 52.2 | 47.8 | 92 | 63 | 73 | 69 | 3.0 |
| Potamalosa richmondia | 51.2 | 48.8 | 103 | 49 | 72 | 73 | 11.0 |
| Sardina pilchardus | 54.9 | 45.1 | 101 | 62 | 82 | 52 | 15.0 |
| Sprattus sprattus | 51.5 | 48.5 | 101 | 52 | 75 | 69 | 6.0 |