The Supplementationof Daphniamagna Enriched Ascorbic Acid to Improve the Growth and Survival Rate of Pterophyllumscalare

Angelfish (Pterophyllum scalare) is a tropical ornamental fish in freshwater with
considerable potential in the global market and promising cultivation. However,
it has a slow growth. The purpose of this research was to find the impact of giving
feeding variations, namely D. magna that enriched ascorbic acid on improving
the angelfish growth and its immune response. The research method used
was Completely Randomized Design (CRD) using four treatments and three
replications. The dosage of ascorbic acid consisted of 0 mg/L, 50 mg/L, 100 mg/L,
and 150 mg/L. The fish was fed twice a day and applied with ad libitum. The result
showed the addition of ascorbic acid had impacted its growth, and it produced SGR
2.393±0.003 %/day and challenge tests. The Survival Rate (SR) after challenge
test was 79.99±1.000 %. In conclusion, the highest amount of growth and survival
was treatment D (150 mg/L).