Maintaining the correct temperature and pH levels in an aquarium is crucial for the well-being of the fish. Different fish species have different needs, and it's important to adjust these levels to the specific requirements of your aquarium species. In this article, we discuss the optimal conditions for some of the most popular aquarium fish and provide tables for a convenient overview.
Ideal water parameters for aquarium fish are essential for their health and well-being. These include not only temperature and pH, but also water hardness (GH) and other specific requirements. Different fish species have unique needs, and it's important to manage these parameters accurately.

Maintaining proper water parameters in an aquarium is crucial for the well-being of your fish. Different fish species have different requirements, and it's important to adjust these parameters to the specific needs of your aquarium species. Below, you'll find a comprehensive table with the ideal water parameters for some of the most popular aquarium fish.
Overview of Ideal Water Values for Common Aquarium Fish
| Fish species | Temperature (°C) | pH value | GH (Hardness) |
|---|---|---|---|
| guppy | 24-26 | 6.8-7.5 | 8-12 dGH |
| Goldfish | 18-22 | 7.0-8.0 | 10-15 dGH |
| armored catfish | 22-26 | 6.5-7.5 | 6-10 dGH |
| African Cichlid | 24-28 | 7.8-8.6 | 12-18 dGH |
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This table summarizes the ideal water parameters for some common aquarium fish. By maintaining these parameters, you can create a healthy and stable environment for your fish.

What are the ideal water parameters for guppies?
Guppies are colorful and popular aquarium fish that are relatively easy to care for. They thrive in an environment with a temperature of 24-26°C, a pH between 6.8-7.5, and a water hardness of 8-12 dGH. Guppies are sociable and get along well with other peaceful fish, making them ideal for community aquariums.

Which water parameters are suitable for goldfish?
Goldfish are well-known coldwater fish that prefer cooler temperatures, usually between 18-22°C (64-72°F). They require a neutral to slightly alkaline pH of 7.0-8.0 and a water hardness of 10-15 dGH (10-15 dGH). Goldfish can grow large and produce a lot of waste, so a powerful filter and regular water changes are essential for their health.

What are the requirements for armored catfish?
Armored catfish, known for their beneficial algae-eating behavior, require specific water parameters to thrive. They thrive in temperatures of 22-26°C, a pH of 6.5-7.5, and a soft water hardness of 6-10 dGH. These fish require a soft substrate to protect their sensitive barbels and are an excellent choice for mixed aquariums.

What are the water parameters for African cichlids?
African cichlids, native to the great lakes of Africa such as Lake Malawi and Lake Tanganyika, require specific water parameters. These fish prefer higher pH levels of 7.8-8.6 and temperatures between 24-28°C. They thrive in hard water with a hardness of 12-18 dGH. African cichlids require a rocky environment that mimics their natural habitat.
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Maintaining proper water parameters is crucial for the well-being of your aquarium fish. By understanding the needs of different species and adjusting your aquarium accordingly, you can create a healthy and stable environment where your fish can thrive. Remember to regularly check your water parameters and adjust them as needed. With the right care and attention, you can enjoy a beautiful and healthy aquarium.
Do you have any questions or would you like to know more about specific fish? Let us know in the comments below. Thanks for reading!
