Research Information System
6th ASIA PACIFIC International Modern Sciences Congress , New Delhi, India, 15 - 16 December 2021, pp.107, (Summary Text)
(Hyphessobrycon herbertaxelrodi) are described. Characterizing this early life stage is important for aquaculture studies. One-year-old black neon tetra were used for breeding in this study. They were fed with commercial ornamental fish feeds three times a day. Larvae were collected immediately after hatching and maintained at 24 ± 0.5°C. They were transferred into in 15 L glass aquariums for morphological development observations. The larvae were randomly sampled and photographed daily from hatching to 30 days after hatching. An image analysis program was used for the observation of general morphological changes. Also, the total length of larvae was measured using image analysis program. Growth patterns in early life stages were calculated as a power function of total lenght with the exponent and intercept obtained from linear regressions on log-transformed data. The total length of the larva was 2.77 ± 0.08 mm on the first day, 3.47 ± 0.16 mm on the 5th day, 5.39 ± 0.11 mm on the 10th day, 6.85 ± 0.38 mm on the 15th day, 7.96 ± 0.20 mm on the 19th day, and 10.42 ± 0.66 mm on the 25th day and 12.26 ± 0.96 mm on the 29th day. According to obtained results, the average length of the larvae, which started the juvenile stage on the 28th–29th days, was 12.26 ± 0.96 mm. In this study investigated the early life stage of black neon tetra and the morphological changes and grotwh patterns of larvae to provide basic information for the seed production of Characidae fish. In conclusion, morphological changes and growth findings indicate that early life stages of black neon tetra are the same as other characins.