Abstract
Nemo fish cultivation activities at BPBL (Balai Perikanan Budidaya Laut) is located in West Sekotong, West Lombok Regency, West Nusa Tenggara. It is one of the technical implementation units for marine aquaculture in developing marine fish farming activities such as ornamental nemo or clown fish. The purpose of this activity is to determine the spawning of nemo fish carried out on an aquarium scale. Clown fish spawning activity at BPBL Lombok produces up to 1,050 eggs in a period, but the average fertilized is 1,012 eggs, and the hatching numbers are 884 eggs during 6 days of incubation and the time needed to start hatching is 24 hours. Some of the parameters of larval growth from eggs, namely FR / Fertilization Rate, get a result of 96%, HR (Hatching Rate) gets a value of 87%, SR (Survival Rate) with a value of 92%. Water quality such as the ideal temperature in nemo fish cultivation is in the range of 27-32°C, while the ideal pH is 6.7-8.8. Dissolved oxygen is more than 5 mg/L. The salinity and ammonia content obtained are ideal, which showing value 30-34 ppt for salinity and ammonia levels less than 3 mg/L.