The habitat of flatus fish

Paralichthys olivaceus is a cold-warm benthic fish with sand-diving habits. Juvenile fish mostly live in estuarine areas with water depth of more than 10m, less organic matter and easy to form eddy currents. Summer fattening here. Paralichthys olivaceus can survive briefly at water temperatures as low as 1°C and as high as 33°C. More than 2 age of flounder ability to adapt to high temperature decreased significantly, and 1 age individuals to low temperature tolerance ability is poor. According to reports, the total length of 10-15cm of the fry by air, the water temperature dropped to 5 ℃-6 ℃ when the coma state, in order to slowly raise the water temperature most can wake up. The optimum temperature for the cultivation of flounder larvae is 17-20 ℃, the optimum temperature for the growth of adult fish is 14-23 ℃, and the optimum temperature is 21 ℃. Paralichthys olivaceus below 13 ℃, above 23 ℃ feeding reduced, above 25 ℃ stop growth, long-term in 27 ℃ environment is easy to cause a large number of deaths. Paralichthys olivaceus is a broad salinity fish, which can live in the estuarine area with salinity below 8 per thousand. Paralichthys olivaceus has a stronger tolerance to low dissolved oxygen than swimmers such as red sea bream and fish-teacher fish, with a lethal concentration of 0.6mg/l-0.8mg/l. Generally, 4mg/l should be taken as the standard for breeding.