Care and maintenance of aquarium fish.
• Who to put in the aquarium? Incompatibility parameters. When choosing fish for an aquarium, you must first divide them into groups that require similar maintenance conditions. The concept of “unpretentious fish” in an aquarium. Selecting fish for a decorative aquarium should take into account their biology; Which fish are called “stunted”?
• Rules for keeping aquarium fish; Like – dislike!? Out of ignorance, amateurs often buy.
Fish for a brackish water aquarium.
• Why do some need salt water and others fresh? Many plants grow poorly in brackish water; Content of various salts; Salt barrier; Estuary; Brackish river; Mangrove swamps.
Inhabitants of the brackish water aquarium.
• List of fish for a brackish water aquarium; List of plants for a brackish water aquarium.
• Keeping fish without heating at room temperature; The uniting property is adaptability to life and conditions of an unheated room aquarium; Some fish species that can be kept in an unheated aquarium at room temperature; List of cold-water fish.
• The most spectacular without a doubt are schooling fish; Schooling fish really need to be kept in a school; List of the most common schooling fish.
• Compatibility of aquarium fish; Fish adapt well in captivity if; The main criterion is habitat similarity; Behavioral diversity.
• Compatibility in feeding preferences; Behavioral diversity of hydrobionts; The aquarist’s task is to; Mutual compatibility of fish, aquatic plants and invertebrates; Fish compatibility table.
Parameters of fish incompatibility.
• Reasons why a particular fish species is not suitable for a specific aquarium; Specific maintenance features; Size and temperament of the fish.
• List of fish suitable or unsuitable for co-keeping; Characiforms; Cyprinids; Cichlidae; Goldfish.
• The level of stress caused by a specific factor; Water temperature in the aquarium; Fish burrow into soft substrate; Fish defend territory; Neighbors should be of approximately equal size; Untreated tap water.
• Signs of stress in your aquarium; Fish stay near the surface, refuse food, constantly hide, have ragged fins, open wounds.
• How many fish can be kept in an aquarium? How many fish fit in an aquarium? The need for aeration in the aquarium; Fish adapt well.
• Ways aquarium fish get to you; Modern development of aquaristics; Raised by an amateur or a group of amateurs; Raised in a medium or large fish farm; Brought from Poland, Belarus, Russia; Brought from Europe; Asian fish farms.
Fish selection for the aquarium.
• Selecting fish for the conditions of your specific aquarium; Requirements for keeping and feeding conditions; Large and small fish species, predatory and peaceful, cold-water and warm-water; When choosing fish and plants for your aquarium; Replenishment of your collection and preventive measures; Quarantine of acquired fish.
• Where are fish purchased? Main guide when choosing fish; What will the size of the fish be; If fish in the aquarium are clearly infected with some disease.
Introducing fish to the aquarium.
• Introducing acquired fish and plants into the aquarium; You can introduce into a general aquarium; Characteristic signs of a cold disease; When a new fish is released into the aquarium.
Acclimating fish to different water.
• Acclimating aquarium fish to different water, or what to do with purchased fish? The technique of acclimating fish is widely known; In the autumn-winter period.
• Quarantine and treatment aquarium; Thanks to quarantine, it is possible to identify; Quarantine of newly acquired fish; Recipes for preventive solutions for fish; What to do if something in the behavior or appearance of the fish is alarming?
Advice for beginning aquarist.
• A beginner aquarist should not treat advice as something unquestionable, blindly and mindlessly copying them; Failures in aquarium fish farming most often befall those who show excessive zeal.
Advice for beginning aquarist-2.
• Sloppiness is no less an enemy of the aquarium than excessive zeal and impatience; A beginner aquarist’s aquarium should be as spacious as possible; For a long time, the theory of “old water” without regular water changes existed.
Advice for beginning aquarist-3.
• It is better to underfeed than to overfeed; A disease is easier to prevent than to cure; Before saying: “I want!”, think about whether the fish “want” it.
• Methods of fish spawning; Most freshwater fish; African representatives of the family; Lithophils are fish that; If there is no spawning substrate; Bubble nest; Mouthbrooding fish are characterized by.
Reproduction of egg-laying fish.
• Egg-laying fish; Readiness for reproduction is judged by; The stimulus for reproduction; In relation to the substrate, fish are divided into.
Methods of reproduction of egg-laying fish.
• Methods of reproduction of egg-laying fish; Spawn and leave eggs unattended; A group of fish guards the eggs; Eggs remain in close contact with one of the parents for some time; Spawning in depressions in the substrate.
Reproduction of egg-laying fish-2.
• Fish that spawn on plants or other underwater objects and care for the eggs; Fish that spawn on plants or other underwater objects and do not care for the eggs.
Reproduction of egg-laying fish-3.
• Fish that spawn in a nest and care for eggs and offspring; Fish that spawn in a shelter and care for eggs and offspring; Mouthbrooding fish that care for offspring; Fish that carry eggs on their body.
Reproduction of egg-laying killifish.
• Development of killifish eggs; Duration of egg development; Spawning methods of killifish; Spawning on plants; Dropping eggs on the substrate; Choice of spawning site; Sphagnum peat is used as substrate; Duration of diapause in egg development.
Reproduction of egg-laying killifish-2.
• Substrate spawners – “II”. Species that must go through a dry period during incubation, this dry period is mandatory; Species whose eggs can also go through a dry period, but this period is not mandatory; Sphagnum peat, damp peat is used as a substrate; The duration of diapause in egg development varies significantly.
Reproduction of egg-laying killifish-3.
• Subgroup “Divers”; Preparation of the spawning tank; Fish that hang eggs; Unlike egg-scattering fish; Hatched larvae need to be immediately; Fish of subgroup “B”; Constant spawning tank method.
• When preparing fish for reproduction, it is important; When selecting producers; Create the necessary conditions for spawning; Fish are introduced for spawning; To preserve eggs, it is required.
• The rearing aquarium has no substrate; When fry begin to grow actively; Larvae and fry of many characiforms; Starting food for characiforms; Maintaining cleanliness is important in the rearing aquarium; Preserving fry in the general aquarium.
Fish are dying in the aquarium.
• Why fish die; Water poisoning by nitrogen compounds; Filter shutdown; Each newly purchased fish must; Lack of oxygen in aquarium water. Why do fish die in hard-to-reach places of the aquarium?
• Transparent container; Net fishing; Catching with bare hands; Aqua Medic – Fish trap;
• Aquarium Pharmaceuticals Stress Coat; Sera aquatan; Sera fyctamin; Tropical biodesinal; Diprivan.
Continued . 
Features of acquisition, transportation and behavior of fish.
