Aquarium Fish Glossary

Aquarium Fish Terms


Breeding in aquarium fishkeeping refers to the intentional process of mating two fish in captivity with the goal of producing offspring. It requires careful planning and preparation, including selecting fish with desirable traits, providing appropriate water parameters, tank decorations, and nutrition. Successful breeding can be used to preserve threatened species, but it also requires protecting the eggs and fry from predators, and providing adequate nutrition and care as the offspring grow.

Common Name

Common name refers to a name by which a species of aquarium fish is commonly known among fishkeepers, hobbyists, and the general public. Common names can vary by region or language, and some species may have multiple common names. While common names can be useful for general communication and identification, they can also be confusing or ambiguous. In some cases, the same common name may be used for different species of fish, leading to potential misunderstandings.


Aquarium habitat is the artificial environment created within an aquarium that mimics the natural environment of a particular species of fish or other aquatic creature. The habitat is designed to provide the necessary physical and environmental conditions that allow aquatic life to thrive. Factors such as water temperature, pH levels, water flow, substrate, and plant life are considered when creating a suitable aquarium habitat.

Scientific Name

Scientific name refers to the formal, universally recognized name given to each species of fish in accordance with the Linnaean system of taxonomy. The scientific name is composed of two parts: the genus name and the species name. Scientific names are used to avoid confusion and ensure accuracy when identifying and discussing species of fish, as they remain the same regardless of language or region


Aquarium species refer to a particular type of fish or aquatic creature that is kept in an aquarium. Each species has unique physical and genetic characteristics that distinguish it from other species. Understanding the needs and requirements of each species is essential for creating and maintaining a healthy aquatic environment. Proper knowledge of a species’ requirements can help ensure its long-term health and survival in an aquarium.


Aquarium substrate refers to the material or layer of material that is placed at the bottom of an aquarium. The substrate can vary in composition, texture, and color, and can have both functional and aesthetic purposes. Common aquarium substrates include sand, gravel, and soil. In addition to adding visual interest to the aquarium, the substrate can also provide a surface for beneficial bacteria to grow and help support the growth of aquatic plants. Some species of fish may also use the substrate for hiding or burrowing. Selecting a suitable substrate for an aquarium depends on the specific needs of the fish and plants being kept, as well as the aesthetic preferences of the fish keeper.

Water Parameters

Aquarium water parameters are the measurable physical and chemical characteristics of the water in an aquarium that impact the health and well-being of aquatic organisms. These parameters include temperature, pH level, water hardness, and levels of chemicals such as ammonia, nitrite, and nitrate. Maintaining appropriate water parameters is crucial for the survival of aquatic life in an aquarium. Since different fish species require different water parameters, it’s important for fish keepers to regularly test and adjust their aquarium’s water to ensure that it remains within suitable ranges for their fish species.