Spotted wolffish is a very robust species, and juveniles thrive at high densities and may be reared at a wide range of salinity levels. Optimal temperature for growth decreases with increasing fish size and is 10–12 ☌ for early juveniles and 4–6 ☌ for adult fish and broodstock.
Ectoparasites may, however, constitute a problem during parts of the year when sea-water temperature increases. Only one bacterial disease, atypical furunculosis, has been reported in farmed fish, but oil-emulsified vaccines have displayed efficient protection both in juvenile and adult fish. Adaptive immune responses are present early after hatching and few potential disease problems have been identified. The species can be weaned directly on formulated feed, and high specific growth rates have been obtained in land-based culture facilities using shallow raceways. Spotted wolffish eggs (5–6 mm) have a protracted incubation period (800–1000 D°) and newly hatched individuals (20–25 mm) are well developed, with the only larval characteristic remaining being a relatively small yolk sac which is completely resorbed after 3–4 weeks.
WOLF FISH VS WOLF EEL FULL
Recent research has focused on identifying key biological parameters in spotted wolffish aquaculture in order to establish a full production line for the species, and basic aspects of reproduction and larval development are now understood, controlled, and no longer limiting production. The first articially fertilized spotted wolffish eggs hatched only 10 years ago, and today the species is considered a very promising candidate species for cold water aquaculture in the North Atlantic.
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