Claire Bedbrook (left) pulls an African killifish tank from a shelf as Ravi Nath looks on. Bedbrook and Nath showed that aging proceeded in discrete steps and that behavior relatively early in life ...

Killifish sound much more vicious than they are. These tiny fish adapt and spread far in the wild but make beautiful fish for display in your home. Killifish is a group of around 1,270 species of ...