Learn About Splendid Loach - as part of the expert series by GeoBeats. Learn About Splendid Loach The Splendid Loach, Botia Splendida, another Loach from Laos. Unique fish in the fact that I don't know why, I don't know of anybody who does, why Mother Nature decided to put polka dots on the tail of a fish. Yellow tail with black polka dots is pretty unique for this fish. Otherwise it does not have a whole lot of other color, but it has a very unique tail. Does not appear to get very large, maybe four or five inches in length. Not overly aggressive for a Loach, a little bit quarrelsome with each other but does not appear to be outwardly aggressive. Very unique fish, I don't know more than a handful of people in the country who even have this fish available because its really rare, really unique fish.