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, ...

A comparison of a normally developed Atlantic killifish embryo, left, and an embryo affected by a group of chemicals called PCBs. The fish on the right has a deformed heart. Killifish that have ...

A critically endangered new species of killifish sampled from an ancient forest in Kenya in 2017 and 2018 has been described in the journal Zootaxa. Nothobranchius sylvaticus, from the Latin ...