Hatchery rearing of sea bass Lates calcarifer Bloch

Abstract

A hatchery rearing scheme for sea bass (Lates calcarifer Bloch) is described. Survival rate from hatching (d0) to harvest (d30) was 34%. Feeding sea bass fry with Chlorella-fed or Selco-enriched instar II Artemia from d19 to d23 resulted in similar survival rates (74%), total length (8.2 and 8.9 mm) and weight (8.9 and 12.1 mg) at d30. Although sea bass fry fed 2.5, 5 or 10 Artemia/ml/day from d14 to d20 exhibited similar survival rates (73-93%), fish were significantly larger as feed density increased (7.1, 8.2, 9.8 mm total length and 2.4, 4.3, 9.7 mg wet weight, respectively). The significance of this study lies in providing technical information on artificial production of sea bass fry.