Fish for a small aquarium: how to choose
If you want to settle fish a small aquarium within thirty liters, it is necessary to know a few rules.
Some important rules
The first rule. Fish for small aquarium should not be predatory. Often take the fry, not thinking what size they reach when Mature. So you need to ask the seller about the maximum size of an adult individual.
The second rule. Fish for small aquarium should not be rare and expensive. In such tanks is difficult to consistently maintain the desired mode. In case of violation of the ecological balance (e.g. due to excess food) will die first.
The third rule. No need to make a lot of fish. One specimen with a length of 5 cm takes about 4 liters of water. It is easy to calculate: unpretentious fish for a small aquarium with a volume of 30 liters in amount of 7-8 pieces will feel quite comfortable.
The fourth rule. Don't need to have very different behavioral factors of individuals. For example, some fish are constantly moving, others sedentary.
Rule the fifth. Need to get fish given the uniform filling of vital volume. For example, territorial individuals can occupy more space of the container, which will bring great inconvenience to other inhabitants. In addition, the fish need to combine and vertically, not to get overpopulation of some water layers (bottom, middle, top).
Types of fish for small aquarium
The most common is an inexpensive fish for a small aquarium of guppies. If you want you can find some beautiful examples of intricate color. Feel good in these tanks and the sword a different color. They come in red, black, spotted, green. Besides swordtails and guppies can live together.
Another fish for a small aquarium – black mollienesia. It is more demanding on the temperature and mineral composition of water. So it is a little salt. Especially effective disk red platies. All these fish are similar in terms of housing, feeding and care.
Sumatran striped Barbus looks very good, especially the mossy Barbus mutant green color.
Zebrafish are small and very unpretentious. Cute Voile cardinals is also of small size and suitable for such containers.
The smallest fish for aquarium, perhaps the neon tetras of the family, but they are more expensive. But neon (red, blue or common) is the most spectacular freshwater fish among all the pack members. A flock of 10-15 individuals will be a real decoration of any aquarium.
If you want to buy a larger fish, then you can stay for a couple solarii or parrots pelvicachromis.
Small catfish (Golden, speckled, green) get along well with any fish. They live in the bottom layer, feed residues feed on the bottom, thereby cleansing the soil. And catfish-ancistrus, due to the structure of the mouth-sucker, clean the walls of the aquarium from the algal bloom.
The number and composition of inhabitants of the aquarium entirely depends on preference and the availability of Finance from its owner.