We just added to our livestock the active and personable Rosy loach (Petruichtys sp.). This loach can make the perfect addition to a planted and nano sized aquarium tanks. This is small loach that measures about an inch in length, but it can grow up to an inch and a half. We recommend purchasing it in groups of about dozen or so to have a better display of its schooling and active behavior. To keep it in optimal health, feed it a varied diet of meaty frozen and dry foods.