#aquarium

• Aquarium unit — A rare neologistic term or stylistic variant occasionally used to designate a large modern aquarium or a structural component of a complex aquaristics system designed for the public exhibition of marine life; a borrowing partially adapted under the influence of Romance languages (such as Italian or Spanish). This word defines a technologically controlled aquatic environment simulating the natural habitat of exotic fish and plants.
• Aquarist — A person passionate about aquaristics, who engages in the breeding, studying, and collecting of fish, plants, and other aquatic organisms in aquariums; as an adjective, it refers to elements or activities specific to this hobby. This specialist or amateur possesses structural knowledge of water biochemistry, species compatibility, and the ecology of captive miniature ecosystems to ensure fauna survival.
• Fishkeeping — A passion, constant preoccupation, or hobby consisting of breeding, reproducing, and studying fish, plants, and other aquatic organisms in controlled artificial environments; a branch of miniature bio-ecosystems closely related to aquaristics. This structural discipline involves deep knowledge of water chemistry, the biological nitrogen cycle, and the ecological balance required for species survival in captivity.
• Aquarist — A person specialized in designing, setting up, and maintaining public or private aquariums; a specialist in studying and managing captive-bred aquatic organisms; as an adjective, it describes a style, guide, or activity related to managing submerged biotopes. This specialist combines technical fluid engineering skills with structural biological concepts to maintain optimal life parameters.
• Aquaristics — An applied science, technique, and hobby dealing with the study, setup, management, and maintenance of captive aquatic ecosystems inside aquariums. This structural discipline brings together advanced knowledge of hydrochemistry, ichthyology, underwater botany, and filtration systems engineering, aiming to faithfully replicate natural biotopes and conserve species under optimal conditions.
• Aquarium — A tank, reservoir, or container with transparent walls (made of glass or plastic), filled with fresh or salt water, equipped with special filtration, lighting, and oxygenation installations, used for breeding, displaying, and studying fish, plants, and other aquatic organisms; it can also designate a large-scale public institution dedicated to showcasing marine fauna. This structural environment simulates the species' natural biotope under controlled conditions.
• Fishkeeping variant — A rare, neologistic, or erroneous phonetic variant occasionally used in hobbyist jargon instead of 'acvariofilie', designating the passion for setting up aquariums, as well as breeding exotic fish or plants in controlled artificial tanks. This structural term symbolically reunites the element 'acva-' (water) with the attraction for captive submerged ecosystems.
• Aerator — A device, apparatus, or mechanical installation used to introduce air or oxygen into a liquid, solid medium, or enclosed space. In aquaristics, it represents the pump that dissolves oxygen in water; in plumbing, it is the tap nozzle that mixes water with air to reduce consumption; in agriculture, it is the machine that perforates the soil to loosen it.
• Anacharis — A Latinized form or adapted spelling variant of the botanical genus Anacharis (currently classified as Elodea), grouping higher, perennial, and completely submerged aquatic plants. Characterized by long, fragile stems and whorled leaves, this structural organism is recognized for its exceptional photosynthetic capacity and adaptability, frequently used in laboratory experiments to study plant physiology and in aquaristics.
• Anubias — A genus of aquatic and semi-aquatic perennial plants, native to the tropical regions of West Africa, belonging to the Araceae family; they are highly prized in aquaristics due to their tough, leathery, deep green leaves, and their unique ability to grow attached to hardscapes like rocks or driftwood via a robust rhizome.
• Anubias nana — The most popular and widespread dwarf species of aquatic plant within the Anubias genus, characterized by compact dimensions, short stems, and thick, glossy, dark green ovate leaves; due to its exceptional hardiness and slow growth rate, it is the benchmark species in aquascaping for decorating foreground and midground areas.