The full biological cycle of the captive-bred stock is not acquired to date and there are less than 30 adult individuals with a different genetic heritage.  The conservation of this genetic capital and its transmission to new generations is therefore primordial for the success of future repopulation operations.

Efforts should be reinforced to understand the zootechnics that are best adapted to the European sturgeon in order to guarantee the conservation of captive stock (bred or acclimatised) and ensure the success of reproduction in captivity.  Improvements in artificial reproduction techniques, at each phase of the gametogenesis, still require supplementary work on biological and genetic engineering.