Guppy is quite a peaceful fish. They will not offend their neighbors in the aquarium, as it is not capable of such atrocities. But other types of fish will be happy to plucking tail fins of guppies, thus causing them to suffer.
Representatives gourami are labyrinth fish that can breathe with gills not only, but also a special body metabolizing oxygen from the air at the water surface. Gourami antennae sticking out of the abdominal fins have a tactile function.
Acidity of water for them is not critical, only that it was not salty. Enhanced aeration is also not mandatory. Enough of the General conditions of detention of fish.
Catfish like algae, but they should not be too much, just 5-6 branches per 50 liters of water. Continue reading