What is the biggest cause of mercury in fish?

What is the biggest cause of mercury in fish? The biggest single source is the burning of fossil fuels, especially coal, which releases 160 tons of mercury a year into the air in the United States alone. From there, rainfall washes the mercury into the ocean.

How did fish get into all the lakes?

How did fish get into all the lakes? Freshwater fish tend to disperse well—as illustrated by the many different species that now occupy the high latitudes of North America, most of which were covered by ice during the last glaciation. Fish have recolonized all of the present-day rivers and lakes that were under ice during that period.

How do you breed betta fish without them killing each other?

How do you breed betta fish without them killing each other?
Conclusion

Set up a breeding tank with five inches of water and no substrate.
Ensure that the tank is fully cycled and at the correct temperature.
Select a healthy breeding pair.
Keep the female betta separated by using a divider until both fish are ready to breed.
Wait for the male to build the bubble nest.

Is cod a big fish?

Is cod a big fish? They can grow up to 51 inches and 77 pounds. They are capable of reproducing at 2 to 3 years old, when they are between 12 and 16 inches long. Cod spawn near the ocean floor from winter to early spring. Larger females can produce 3 to 9 million eggs when they spawn.

What is the dimensions of 100 gallon fish tank?

What is the dimensions of 100 gallon fish tank? In general, a 100-gallon tank will measure between 48-60 inches (121.9-152.4 cm) long, 21 inches (53.3 cm) wide, and 20 inches (50.8 cm) high.

What is the dimensions of 100 gallon fish tank?

What is the dimensions of 100 gallon fish tank? In general, a 100-gallon tank will measure between 48-60 inches (121.9-152.4 cm) long, 21 inches (53.3 cm) wide, and 20 inches (50.8 cm) high.

How big is the biggest puffer fish?

How big is the biggest puffer fish? Tetraodon mbu The species is commonly referred to as the giant freshwater pufferfish due to its massive size, growing to a length of 67 cm (26 inches).

What is the biggest puffer fish in the world?

What is the biggest puffer fish in the world? Tetraodon mbu The species is commonly referred to as the giant freshwater pufferfish due to its massive size, growing to a length of 67 cm (26 inches).