Would fish be healthy in lake that has a low pH?

No, fish are generally not healthy in a lake with a low pH. Here's why:

* Acidification: A low pH indicates acidity. Lakes with low pH are often referred to as "acidified" lakes.

* Aluminum Toxicity: Acidic water dissolves aluminum from the soil and rocks, releasing it into the lake. Aluminum is toxic to fish, interfering with their respiration, growth, and reproduction.

* Other Chemical Changes: Low pH can also affect the availability of other essential nutrients for fish and the overall chemical balance of the lake, making it difficult for fish to survive.

Effects of low pH on fish:

* Death: Fish can die directly from exposure to high levels of aluminum or other toxic substances released by acidification.

* Reduced Growth and Reproduction: Fish may experience stunted growth and reduced reproductive success in acidic waters.

* Increased Susceptibility to Disease: Acidic water can weaken fish's immune systems, making them more vulnerable to diseases.

Overall, a low pH is detrimental to the health of fish and can significantly impact the overall ecosystem of the lake.