How to choose the right fish species for a Small Fish Tank?

When choosing the right fish species for a Small Fish Tank, you need to consider multiple factors, including the size of the fish tank, water quality requirements, temperature control, and the personality and habits of the fish. Here are some specific suggestions:
Fish tank size:
First, you need to understand the size of your fish tank. Different species of fish have different requirements for the size of the fish tank. For example, red cross fish are suitable for small fish tanks larger than 20 cm, while Lilyfish and Red Swordfish are more suitable for fish tanks larger than 40 cm.
Generally speaking, smaller fish tanks should choose fish with smaller body size and low space requirements.
Water quality requirements:
Different fish have different requirements for water quality. Some fish, such as red cross fish and zebrafish, do not have high requirements for water quality, and only need to keep the water clean. Lilyfish, on the other hand, have slightly higher requirements for water quality, requiring the water to be slightly alkaline with a pH value between 7-8.
When choosing fish, make sure that the selected fish can adapt to the water quality conditions of your fish tank.
Temperature control:
Tropical fish usually require higher water temperature, such as red cross fish, zebra fish, goby fish, red swordfish, etc., and the suitable water temperature is generally between 22-30 degrees Celsius.
When choosing fish, make sure your fish tank can maintain the temperature required by these fish.
Personality and habits:
Consider the personality and habits of the fish and ensure that the selected fish can coexist harmoniously. For example, red cross fish have the habit of attacking small fish and are not suitable for mixed breeding with small fish. Goby fish are gentle and suitable for mixed breeding with gentle and quiet fish.
Some fish, such as Thai fighting fish and Chinese fighting fish, are beautiful but not suitable for mixed breeding because they are prone to fighting.
Other factors:
Consider the color, shape and ornamental value of the fish. Different species of fish have different appearance characteristics. When choosing, you can decide according to personal preference and the decoration style of the fish tank.
Consider the difficulty and cost of raising fish. Some fish may require special food or maintenance methods, while others are easier to raise.
In summary, choosing the right fish species for a Small Fish Tank requires comprehensive consideration of the size of the fish tank, water quality requirements, temperature control, personality and habits, and other factors.