Any of several tropical and subtropical live-bearing fishes of the genus Poecilia or Mollienesia, commonly kept in aquariums.

Objective to study acute toxicity of domestic detergents produced by four different factories on Xiphophorus heller, Poecilia and Gambusia affinis.

Objective To explore the feasibility about Xiphophorus helleri, Poecilia and Gambusia affinis as test organisms for 7 day subchronic toxicity test .