Striking in the dead of night, thieves are targeting aquariums in Saitama Prefecture near Tokyo and making a killing selling tiny "medaka" killifish to private collectors. Some specimens can ...

The population of Gulf killifish in the Houston Ship Channel had been steadily declining for decades, likely a result of the toxins pouring in from industrial activity, when suddenly and mysteriously, ...

Killifish, or egg-laying toothcarps, are known for their ecological adaptability and species diversity. Two families of killifish exist in Europe today: the highly species-rich Aphaniidae and the ...