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

But, where do the cells come from? The so-called “brain ... Keisuke Asakura is quoted as comparing the organoids to a “baby’s brain” stage, that seems quite a stretch, as at present ...

Pregnant fish can also get “baby brain" - just like human moms ... an indicator of which areas of the brain were producing new cells. The study is the first to map the areas of brain cell ...