Snakehead fish grow up on food such as scalepods, cladocerans, chironomid larvae, aquatic insect larvae, tadpoles, shrimps, larvae, small fish and frogs, etc.
Snakehead fish of different sizes have different prey targets (details are explained below):
1. Seeds with a body length of less than 3 cm mainly feed on flexipoda, cladocerans and Chironomid larvae, etc.,
2. Seeds with a body length of less than 3 to 8 cm feed on aquatic insect larvae, tadpoles, shrimps, larvae, etc.,
3. Adult fish longer than 20 centimeters prey on various small fish and frogs (small fish mainly refer to crucian carp, dinner strips, red-eyed trout, loaches and various juvenile fish).
Extended information:
The living environment of snakeheaded fish:
Benthic fish, usually inhabiting still water or micro-flowing water with thick aquatic plants and soft bottom mud. middle. The habitat of snakehead fish is found in lakes, rivers, reservoirs, ponds and other waters. It often dives to the bottom of the water and maintains its balance by swinging its pectoral fins.
It has strong adaptability to changes in environmental factors in the water body, especially to hypoxia, water temperature and poor water quality. When the water is deprived of oxygen, it can raise its head above the water. The back is flattened laterally.
The head is long, slightly flat at the front and slightly raised at the back. Breathing oxygen in the air directly with the help of the epibranchial apparatus, which is composed of the epibranchial bones on the back of the first gill arch and the bones extending from the hyoid and mandibular bones in the gill cavity.
So even in humid areas with little or no water, it can survive for a long time. The survival water temperature of mullet is 0~41℃, and the optimal water temperature is 16~30℃. When the water temperature reaches above 8℃ in spring, it often moves in the middle and upper layers of the water body;
It is active in the upper layer of the water body in the summer season; when the water temperature drops below 6℃ in autumn, it swims slowly and often lurks in the depth of the water; When the water temperature is close to 0℃ in winter, they will live hibernatingly in the mud at the bottom of the water without eating. Has strong jumping ability.
When the weather is sultry, it rains and the water rises, snakeheaded fish will often jump out of the water and escape along the pond embankment; when there is impact of running water, the fish will also jump and escape.
If there is insufficient food in the pond where it lives, it will also move to another pond. When moving, its body will be like a snake, moving forward slowly. When the temperature range is 10℃ to 15℃, it can stay out of the water for 3 to 4 days.
Reference: Baidu Encyclopedia---Black Fish