Whether you go by the calendar or conditions on the ground, winter in North Dakota is always a season of transition. Officially, the books say it starts Dec. 21 and wraps up March 21. For me, winter ...

Reef fish in different oceans often develop similar color patterns because evolution explores the same set of biological ...

Fish are adapted to their own optimums. In the heat of summer, trout get stressed while bass thrive. Iin winter, it’s the ...

The colourful Napit Koi (Badis badis) may be tiny, but it plays an important ecological role in the wetlands of northeastern Bangladesh ...

Low oxygen and rising carbon dioxide in mangrove waters may shrink critical nursery habitat for young fish and threaten ...

Activity levels and daytime sleepiness can be combined into a ‘behavioural clock’ that predicts whether a fish will have a short life or a long one.

Fish change their routine during the cold months, and seasoned ice anglers have learned to adapt right along with them.

The Amazon molly reproduces without sex. A genomic copy-and-paste trick called gene conversion may explain how it avoids evolutionary meltdown.

The chain catshark may look like any other shark in daylight, but under blue light, its skin glows neon green. Here’s a breakdown of this remarkable adaptation.

This suggests that tracking simple metrics, such as activity and sleep, throughout a 24-hour cycle can inform us about where ...

Newsweek discussed the study with a doctor, who said that "bone loss can occur relatively quickly during rapid weight loss." ...

Over the past decade, the UK ornamental fish market has experienced notable growth. Increased interest in aquascaping, home ...