CHINA DAILY The zebrafish that accompanied the Chinese astronauts on last year's Shenzhou XVIII ... water samples and other samples from closed aquatic ecosystems to analyze the impact of the space ...

"We observed the zebrafish growth in the space station, which have accompanied us for several months. As the mission requires, we have to carry out over 90 experiments and tests, and all of them ...

Unlike humans, zebrafish grow new heart muscle cells ... "There were no adverse effects, such as excessive growth or an enlarged heart. We also didn't see any cell division in healthy heart ...

After a heart attack, humans lose millions of heart muscle cells that cannot regrow, often leading to heart failure where the heart struggles to pump blood effectively.

To help answer these questions, researchers are turning to an unlikely animal: tiny, days-old zebrafish. The millimeters-long, translucent zebrafish may not get depressed exactly like humans do ...