Not true of bad luck! I don't know where it came from. If you want to get easy-to-raise fish, get live-born fish (hellers, guppies, molinesia). Other easy-to-raise fish are neon fish, most catfish (ancitrus, for example) also pick up food that has fallen to the bottom, goldfish and barbs. But before you take fish, you need to buy the necessary equipment for the aquarium - thermometer, heater, lighting, filter and aeration pump. It is also good at least a week before releasing the fish, to fill the aquarium, put the primer, decoration, plants, which are best to be alive, not artificial. Before you buy the right type of fish, read about what kind of water it prefers, also try not to take predatory fish (barbs, beta, etc.) and put them in the common aquarium with peaceful fish. Before releasing fish into the aquarium, you must acclimatize them (to equalize the temperature of the water in the bag with the temperature of the water in the aquarium. This is done by placing the bag in the aquarium and wait about 15 minutes) so that they do not receive a temperature shock. You should also, when changing the water in the aquarium, change it with water that has stood for at least 24 hours. The same goes for topping it up. It is good not to change it completely, but up to 1/3 of its volume
1 maxgiesinger answered
Not true of bad luck! I don't know where it came from. If you want to get easy-to-raise fish, get live-born fish (hellers, guppies, molinesia). Other easy-to-raise fish are neon fish, most catfish (ancitrus, for example) also pick up food that has fallen to the bottom, goldfish and barbs. But before you take fish, you need to buy the necessary equipment for the aquarium - thermometer, heater, lighting, filter and aeration pump. It is also good at least a week before releasing the fish, to fill the aquarium, put the primer, decoration, plants, which are best to be alive, not artificial. Before you buy the right type of fish, read about what kind of water it prefers, also try not to take predatory fish (barbs, beta, etc.) and put them in the common aquarium with peaceful fish. Before releasing fish into the aquarium, you must acclimatize them (to equalize the temperature of the water in the bag with the temperature of the water in the aquarium. This is done by placing the bag in the aquarium and wait about 15 minutes) so that they do not receive a temperature shock. You should also, when changing the water in the aquarium, change it with water that has stood for at least 24 hours. The same goes for topping it up. It is good not to change it completely, but up to 1/3 of its volume