Sperm hatcheries

Cryopreservation of gametes from aquatic species, either for routine use in hatcheries or for long-term cryobanking, has reached varied levels of development (Table 3.2) under the expertise of a world-wide scientific community (Fig. 3.3). Sperm is easily cryopreserved in almost all species, although spermatophores in crustaceans are stUl difficult to handle and to test for fertilization. Cryopreservation of oocytes and larvae in molluscs shows promise, although in fish it is still a field of active research. 

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