http://www.bollmoraakvarieklubb.org/artiklar/praktbotia/praktbotia.htm
http://www.loaches.com/articles/clown-loach-breeding-related-items
http://www.loaches.com/loaches-in-books-magazines/breeding-clown-loaches-granville-hammond
http://www.loaches.com/articles/why-loaches-should-not-be-kept-with-malawi-cichlids
http://www.loaches.com/loaches-in-books-magazines/books-featuring-loaches
http://akvaforum.no/profile.cfm?id=9536
http://rmbr.nus.edu.sg/biodiversitii/bio/aquarium_more.html#clown
http://www.cichlids-aust.com/articles.html
http://www.aqualandpetsplus.com/Oddball,%20Clown%20Loaches.htm
http://www.practicalfishkeeping.co.uk/pfk/pages/show_article.php?article_id=556
http://www.indahnesia.com/picture/KAL/005/jungle_river.php
http://www.ibanorum.netfirms.com/
http://www.petfrd.com/forum/showthread.php?t=22801&page=1&pp=15