Freshwater Aquarium Fish

DIFFERENT TYPES OF AQUARIUM An aquarium is not just a motley collection of plants and fish. Some aquarists aim to reconstruct the biotope of a specific geographical region (Central America, the Amazon, Asia, Africa), while others concentrate on a single group of fish (for example, livebearers, Cichlids, or marine fish). Whatever the option, an aquarium […]

Since air contains around 20% oxygen, even the most oxygenated water rarely contains more than 1% dissolved oxygen. Fish have special organs - branchiae - which allow them to extract most of this (see Anatomy and Biology, page 42). Oxygen contributes, in addition, to the respiration not only of plants but also of organisms which […]

FISH, PLANTS AND ACCESSORIES FOR YOUR AQUARIUM.