questions: asked about identification of quality seed and stunted seed or yearling for fish farming 
 answers: seed idenfitification based on :
any unusual appearance on fish skin or scale, gill should be red in colour, no spot should be present, mainly check for brooder or parent fish
since stunted yearling seed is almost similar to new seed, it is hard to identify the difference.
please go through the above mentioned factors for choosing healthy and quality seed
quality seed can be availed from fisheries epartment