Learn more about some types of freshwater fish you might want living in your aquarium.

Find out everything you need to know about mollies —including habitat, diet, and general care — to begin your home aquarium hobby with success.

Mollies are social fish, preferring the company of other mollies and similar species. WebMD recommends keeping at least five mollies at a time, preferably with a 2:1 female-to-male ratio to ...

Now, researchers reporting in Current Biology on December 22 have shown that small freshwater fish known as sulphur mollies do a similar thing, and for life or death reasons.

Now, researchers have shown that small freshwater fish known as sulphur mollies do a similar thing, and for life or death reasons.

Small freshwater fish found in sulphur springs in Mexico take part in coordinated action similar to fans in a stadium doing 'the wave.' Its purpose is to confuse and discourage predatory birds ...