SINGAPORE – A new study in Singapore found that Betta fish – also known as Siamese fighting fish – should be kept in a minimum tank size of 5.6 litres when displayed for sale and it should ...

A new study published in Animal Welfare examined how tank size and furnishings impact the behaviour of Siamese fighting fish (Betta splendens), one of the world's most popular aquarium fish.

Large female fish produce disproportionately more eggs than smaller mothers of the same species do, according to a study published today (May 11) in Science. After examining the size and number of ...

This type of cryptic female selection is well studied among animals with internal fertilization, but unexpected among those with external fertilization. “These new results open up a whole new world of ...