3D-printed shell halves allowed researchers to peek inside the cichlid's home and observe the behavior of the mother and her fry during brood care.

eating zooplankton when they are young, but quickly progressing to insects, small amphibians, and other fish. These fish, whose elongated bodies earned them their name, can grow up to three feet ...

The team films something not seen before: an hours-long teaching session between adults and their young. Killer whales are one of only a handful of animals that actively teach their young, and it's ...

They are livebearers, meaning they give birth to live young, which can be fascinating ... Corydoras catfish are small, bottom-dwelling fish known for their peaceful nature and social behavior.

Young children may find this task tedious and, without appropriate oversight, may neglect the necessary water changes to ensure their pet's survival. Betta fish require a specific diet of protein ...

Male seahorses carry and give birth to their young, expelling them from their pouch via their mouths. Some goby fish species give birth to their young in their mouths, where they remain until they are ...

The young and the mother each follow ... abandoned snail shells in which they raise their offspring. Although these cichlids are a popular aquarium fish, what goes on inside the shell has, until ...

The mother fish itself also has a precise idea of when it is time to let her offspring go: if her young were replaced with an older clutch, she would push the larvae that she thought swam out too ...