While most fish reproduce by laying eggs, some species are live-bearing, or viviparous, and carry their offspring internally.

One of the best things that can happen to a zoo or aquarium is for one of their resident animals to go viral. But what happens when these cute animals become, well, less cute?

Pregnant fish ... have a stronger impact on decision-making and sensory reception. Several previous studies into the detrimental impact of pregnancy on mammalian brains - sometimes called “baby ...

What Gove and Whitney have found lately ... Some larval fish swim to slicks, some drift, as do eggs not yet hatched. Predators converge on slicks too. If a baby fish manages to avoid being ...

That farmers produced more babies, Larsen says, is simply evidence that “you don’t have to be disease free ... narwhals, and fish. So how do hunter-gatherers get energy when there’s no ...