Abstract.— The black sea bass Centropristis striata L. endemic to the U. S. Atlantic and Gulf of Mexico coasts is a highly sought species that commands a high price in the marketplace. Investigations were undertaken to determine the basic requirements for culture of sea bass larvae and juveniles. Adult black sea bass were captured from the wild and were found to be robust and to adapt well to captivity. Larvae were obtained by strip spawning of these adults and survived and grew at higher rates in seawater supplemented with algae (greenwater) and maintained at 22 C, than in seawater with or without supplemental algae at 18 C. Larvae were provided a diet of rotifers through 12 d post hatch (DPH) and weaned over a 3‐d period to enriched Anemia replenished daily to a density of 10 individuals/mL. By 18 DPH, larvae began ingesting a formulated diet for marine finfish and were completely weaned from live feed by 25 DPH, which coincided with the onset of metamorphosis. Juveniles tolerated a range of salinity from 10–32 ppt with the highest growth rate observed at 20 ppt. Culture of larvae and juveniles on a commercial scale was successful using conditions similar to those employed in the laboratory. The findings presented here suggest the potential for commercial culture of this species in the USA.

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Juvenile Atlantic cod Gadus morhua (initial mean weight ¼ 15.6 g) were fed three isonitrogenous, isocaloric diets (55% protein, 16% fat; calculated gross energy ' 20.5 MJ/kg) containing dried laver (nori) Porphyra spp. (red algae) to replace 0, 15, and 30% of the fish meal in a commercially available marine finfish diet. After 84 d, no differences in survival, growth, or hepatosomatic index were found among the treatment groups. The fish attained an average weight of 41.0 g, a specific growth rate (SGR) of 1.19%, and a feed conversion ratio (FCR) of 1.26. The fatty acid composition of the muscle was similar among treatment groups except that arachidonic acid levels were greater in fish given diets with 30% Porphyra replacement. These results indicate that Porphyra spp. at levels up to 30% provide a suitable fish meal replacement in diets for juvenile Atlantic cod.

The requirements to rear spotted wolffish, Anarhichas minor, a cold water, demersal fish, native to the north Atlantic Ocean, have been developed over the past 25 years (since 1990s) and it now is commercially produced in one fish farm in Norway with additional plans for commercial development in the near future in Quebec, Canada. Spotted wolffish have numerous attributes that make them a desirable species to culture in the United States including, but not limited to: having a high value; desired by consumers and chefs; not supplied by U.S. or Canadian fisheries; an established broodstock available in neighboring Quebec; well-developed hatchlings that do not require live feed; high rearing density tolerance; and low disease susceptibility.Here, we review the advancements made in broodstock management and spawning, egg incubation, juvenile rearing, and on-growing of fish, as well as future research and development needs. Areas requiring further focus include reducing variability in gamete production; nutritional studies at all life stages; health expertise; genetic selection; and further refinement of standard operating procedures at the commercial level for all life-stages. Given the state of advancement of wolffish cultivation and the existence of a

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