Division 2 Biological data on stocks caught by United Kingdom fishing vessels in commercial fisheries within and outside United Kingdom waters and in recreational fisheries within United Kingdom waters.F1

Such data shall consist of the following:

1. (a)

   Catch quantities by species and biological data from individual specimens enabling the estimation of:

   1. (i)

      For commercial fisheries, volume and length frequency of all catch fractions (including discards and unwanted catches) for the stocks listed in Tables 1AF2... and 1C, reported at the aggregation level 6 as set out in Table 2. The temporal resolution shall be coordinated at marine region level based on end-user needs;

   2. (ii)

      For commercial fisheries, mean-weight and age distribution of catches of the stocks listed in Table 1A... and 1C. The selection of stocks from which these variables have to be collected and the temporal resolution shall be coordinated at marine region level based on end-user needs;

   3. (iii)

      For commercial fisheries, sex-ratio, maturity and fecundity data for stocks listed in Tables 1A... and 1C of catches at frequencies needed for scientific advice. The selection of stocks from which these variables have to be collected and the temporal resolution shall be coordinated at marine region level based on end-user needs;

   4. (iv)

      For recreational fisheries, annual volume (numbers and weights or length) of catches and releases for the species listed in Table 3 and/or the species identified at marine region level as needed for fisheries management purposes End user needs for age or other biological data as specified in paragraphs (i)-(iii) shall be evaluated for recreational fisheries at marine region level.

2. (b)

   In addition to data collected under point (a), data on anadromous and catadromous species listed in Table 1E caught by commercial fisheries during the freshwater part of their lifecycle, irrespective of the way these fisheries are undertaken, as follows:

   1. (i)

      stock-related variables (for individual specimens, on age, length, weight, sex, maturity and fecundity, by life stage, but further specified on a species and regional basis), and

   2. (ii)

      annual catch quantities by age class or life stage.

3. (c)

   In addition:

   as regards eel, information (e.g. data, estimates, relative trends, etc.) collected annually in at least one river basin per eel management unit on:

   1. (i)

      the abundance of recruits,

   2. (ii)

      the abundance of the standing stock (yellow eel), and

   3. (iii)

      the number or weight and sex ratio of emigrating silver eels,

   and as regards all wild salmon: information collected annually — unless agreed otherwise at regional level — on the abundance of smolt and parr and number of ascending individuals.

The designation of rivers to be monitored for eel and salmon shall be defined at regional level. The selection of stocks from which these variables have to be collected shall be coordinated at regional level based on end-user needs.