Habitus, habitat and distribution of Horaglanis in Kerala, southwestern India. A Horaglanis in life. B Typical laterite rock showing tiny pores. C Homestead lateritic dug-out well in Kerala – habitat of Horaglanis. D Range and species-specific localities within the lateritic soil zone of Kerala based on published distribution records prior to current study. E Current distribution records resulting from our citizen science campaign. Colored circles are genetically confirmed species, while unfilled/white circles indicate records available from social and print media that were not genetically analyzed.