Despite their seemingly idyllic surroundings, coral reef fish show unexpected toughness, according to a new analysis of fish respiration. In the first tests of low-oxygen tolerance among reef fish, ...

Fish kills on small lakes and ponds can occur during summer if dissolved oxygen levels in the water crash. "It can happen on any body of water or a section of a body of water," said Eric Brinkman, ...

Severe oxygen drops in the water can leave trails of fish kills in their wakes, but scientists thought adult fish would be more resilient to the second major threat in coastal waters: acidification. A ...

Fish can drown. While it may not seem like it, fish do require oxygen to breathe; it's just that they get what they need from the oxygen dissolved in water rather than in the air. Too little oxygen ...

Larger fishes are more likely to experience oxygen deficiency in warming water than smaller species. The same applies to fish with large cells, note researchers. In addition, marine fishes are less ...

Finicky winter fish often follow and sniff without biting. Learn how jigging cadence, lure size, and deadsticking can trigger strikes.

All animals need oxygen to survive - even if they spend their lives in water. Humans and terrestrial animals inhale air, which is a mix of many gasses and 20 percent of that is oxygen. The process ...