The handling methods after angelfish spawn mainly include isolation, water quality management, water temperature control, feeding, and precautions during the hatching process.
Isolation: During the breeding period of angelfish, the parent fish should be separated from other fish to avoid the impact of the external environment on spawning.
Water Quality Management: The water quality during the breeding period should be kept slightly acidic, with a pH value of around 6.5. Methylene blue can be used for disinfection, and old water can be used to maintain a stable environment. After spawning, an air pump should be used in the hatching tank to increase the oxygen supply.
Water Temperature Control: The water temperature needs to be raised to around 27°C, and sufficient light should be provided for five to six hours a day.
Feeding: The fry usually hatch within two days but will remain on the spawning board for about a week. After a week, the fry start to swim, and at this time, some chopped fish worms can be fed.
Precautions during the Hatching Process: The parent fish will take turns guarding the eggs in front of the spawning board and use their fins to stir the water flow to supply oxygen. The parent fish will eat the unfertilized eggs, which is a normal phenomenon. During the hatching process, the parent fish may fight over the right to guard the eggs. At this time, human intervention is needed to avoid affecting the success of hatching.
Through the above measures, the breeding process of angelfish can be effectively managed and promoted.