Why can't fish survive in acidic water?
Some types of fish do live in acidic water. Water with a PH
level below 7.0 is considered acidic water. The lower the PH the
more acidic the water, the more acidic the water the more aluminum
is released which is unsafe for fish. Also, the more acidic the
water the lower the dissolved oxygen content is. So having water
too acidic for the type of fish that inhabits the water is keeping
the fish deprived of proper oxygen levels which results in lower
body weight, stunted growth, lethargic behavior, fish eggs being
unable to hatch, shorter life spans and death.