River,Length (mm),NO. eggs,Data author,Data retrieval Trent,581,36013,Calverton Fish Farm,emailed Trent,605,37873,Calverton Fish Farm,emailed Trent,670,49144,Calverton Fish Farm,emailed Trent,718,57494,Calverton Fish Farm,emailed Trent,600,34693,Calverton Fish Farm,emailed Trent,740,62977,Calverton Fish Farm,emailed Trent,718,35672,Calverton Fish Farm,emailed Trent,660,35221,Calverton Fish Farm,emailed Trent,695,54440,Calverton Fish Farm,emailed Trent,635,56614,Calverton Fish Farm,emailed Trent,622,30841,Calverton Fish Farm,emailed Trent,585,29355,Calverton Fish Farm,emailed Trent,613,46075,Calverton Fish Farm,emailed Trent,654,46970,Calverton Fish Farm,emailed Trent,605,38563,Calverton Fish Farm,emailed Severn,314,1413,Hancock,Extracted from publication Severn,352,2518,Hancock,Extracted from publication Severn,371,3007,Hancock,Extracted from publication Severn,355,3539,Hancock,Extracted from publication Severn,385,3792,Hancock,Extracted from publication Severn,367,3859,Hancock,Extracted from publication Severn,365,4057,Hancock,Extracted from publication Severn,363,4342,Hancock,Extracted from publication Severn,336,4479,Hancock,Extracted from publication Severn,325,5272,Hancock,Extracted from publication Severn,366,5044,Hancock,Extracted from publication Severn,365,5574,Hancock,Extracted from publication Severn,497,7047,Hancock,Extracted from publication Severn,420,6723,Hancock,Extracted from publication Severn,410,7130,Hancock,Extracted from publication Severn,381,7093,Hancock,Extracted from publication Severn,379,7731,Hancock,Extracted from publication Severn,395,7595,Hancock,Extracted from publication Severn,441,7993,Hancock,Extracted from publication Severn,400,9531,Hancock,Extracted from publication Severn,448,9850,Hancock,Extracted from publication Severn,479,10037,Hancock,Extracted from publication Severn,479,10037,Hancock,Extracted from publication Severn,488,10746,Hancock,Extracted from publication Severn,503,12773,Hancock,Extracted from publication Severn,569,12847,Hancock,Extracted from publication Severn,518,17877,Hancock,Extracted from publication Severn,541,19943,Hancock,Extracted from publication Severn,571,20136,Hancock,Extracted from publication Severn,576,20977,Hancock,Extracted from publication Severn,606,22671,Hancock,Extracted from publication Severn,543,24798,Hancock,Extracted from publication Severn,550,26309,Hancock,Extracted from publication Teme,614,31487,CGR,Estimated from length Teme,651,39328,CGR,Estimated from length Teme,688,48521,CGR,Estimated from length Ouse,616,31878,TB,Estimated from length Idle,464,10861,AP,Estimated from length Policar et al 2007,336.185,3192,,Published FL estimated