Mudskippers break the rules of fish biology by breathing through their skin, walking on their fins and thriving on land where water disappears twice a day.

When oxygen disappears, most fish suffocate. This one ferments its own metabolism and waits months for spring beneath frozen lakes.

Stressed fish tend to become unhealthy fish, so it's very important that fish farm operators spot stress as early as possible. A new AI-based system could help them do so, by monitoring the rate at ...

When we say that someone is a “fish out of water,” we sometimes mean to suggest that they are uncomfortable or out of their ...