can be raised in a 25cm fish tank? Two fish can be raised in a 25cm fish tank less than 10cm, and about 8 fish can be raised in a 4-5 cm fish tank. If the fish tank is relatively small, you can't raise too big fish, otherwise you won't be able to move, and it won't take long for you to die. Moreover, small fish tanks do not need to add filters, oxygen pumps and other equipment, so the water quality is not easy to maintain, need to change water regularly, so as to ensure the cleanliness of the water, to avoid fish poisoning.
1, goldfish: goldfish is a common ornamental fish, although it is cultivated by crucian carp, but the body is not big, very suitable for raising in a small fish tank. There are many species of this kind of fish, which are generally divided into four categories, namely, grass species, Wen species, dragon species and egg species, among which grass species are the best to raise and the most common.
2, guppy: guppy is a kind of omnivorous fish, also called anchovy, body length is only 3-4 cm, not enough for its tail is very big, and very graceful. This kind of fish has a strong ability to adapt to the environment, and is very active, can be mixed with other small fish, mainly feeding on zooplankton.
3. Zebrafish: The length of zebrafish is generally less than 6 centimeters, and its body is spindle-shaped, so it is more appropriate to raise it in a small fish tank. This kind of fish has a lively temperament, horizontal stripes on its body, and strong resistance to changes in water temperature, but the temperature must be kept above 20 degrees Celsius, and it likes to swim in groups.
