Chemometrics and cheminformatics in aquatic toxicology This book introduces readers to the existing and emerging problems of contamination of the aquatic environment due to various metal and organic pollutants (including industrial chemicals pharmaceuticals cosmetics biocides nanomaterials pesticides surfactants dyes etc.) and resultant effects on water quality chemical threat to the aquatic organisms and consequent effects on human health. The book discusses different chemometric (classification and pattern recognition tools clustering techniques principal component analysis multivariate regression analysis etc.) and cheminformatic (toxicophore QSAR data mining etc.) tools for the non experts and their application in analyzing and modeling toxicity data of chemicals (including metal and organic contaminants) to various aquatic organisms. Split into four sections the book covers chemometric and cheminformatic tools and protocols case studies and literature reports and tools and databases. Multispecies aquatic toxicity modeling will demonstrate the data gap filling in absence of toxicity data for a particular aquatic species. Various aquatic toxicity databases and chemometric software tools and webservers are covered and practical examples of model development with illustrations are provided