How do you make fishes mate in aquarium?

1. Species Compatibility: Choose fish species that are compatible in terms of water parameters and behavior. Do research to ensure that the fish you select can cohabitate peacefully and are compatible for breeding.

2. Water Conditions: Ensure that the water in the aquarium is clean, free of harmful chemicals, and has the appropriate pH and temperature for the fish you have chosen.

3. Hiding Places: Provide plenty of hiding places for both males and females. These could include plants, caves, or other decorations that give the fish a sense of security.

4. Water Flow: Ensure there is a gentle current or water flow in the aquarium. Many species of fish prefer water with some movement during the breeding season.

Encouraging Mating Behavior:

1. Conditioning: Feed your fish a high-quality, protein-rich diet to promote good health and breeding readiness. Some foods, such as brine shrimp or daphnia, are particularly good for conditioning fish for breeding.

2. Water Changes: Perform regular water changes to keep the water clean and free of waste products that could inhibit breeding.

3. Temperature: Gradually increase the temperature of the water by a few degrees Fahrenheit/Celsius. This can help to mimic the natural conditions that trigger breeding.

4. Ratio: For most species, a ratio of one male to two or three females is recommended for successful breeding.

5. Stimulation: Introduce elements like artificial plants or décor that resemble breeding grounds in nature. Some species may also respond to changes in lighting conditions.

6. Remove Aggressive Fish: If there are aggressive fish in the aquarium, consider moving them to a separate tank or removing them entirely. Aggressive behavior can disrupt the breeding process.

Post-Breeding Care:

1. Remove Parents: Once breeding has taken place and the eggs have been laid, it is often recommended to remove the parent fish to a different aquarium. This prevents them from consuming the eggs or harming the fry.

2. Monitor Water Quality: Keep a close eye on the water quality during this period, as the eggs and fry are susceptible to water pollution and fluctuations in water parameters.

3. Feeding the Fry: Once the fry hatch, you will need to provide appropriate food for them. This may include infusoria, live baby brine shrimp, or commercial fish fry food.

4. Separate the Fry: As the fry grow, it may be necessary to separate them into different aquariums to prevent overcrowding and ensure proper growth and development.

Remember that breeding fish in an aquarium can be a delicate process, and different species may have specific breeding requirements. It's always recommended to research the specific needs and preferences of the fish species you are keeping to ensure successful breeding.