1.   A fifth of all freshwater fish are either extinct or endangered.

2.   Test for toxicity with a few Daphnia in the container, as they are more sensitive to toxins than most freshwater fish.

3.   The bichir and other primitive freshwater fish have a pouch opening from the gut to enable them to breathe air.

4.   The pollution of lakes and rivers has reduced the supply of freshwater fish.

5.   The pools are home to frogs, newts, and freshwater fish.

6.   ...fishmongers displaying freshwater fish for sale.

7.   The perch is a freshwater fish.

8.   And most of the farm-raised production is freshwater fish.

9.   All freshwater fish species can be affected, or killed, by the bacteria suspected, environment officials said.

10.   Bull Shoals is home to trout, bass and a wide variety of other freshwater fish.