With beautiful colors and unique style , and dress clown makes a lovely addition to any aquarium . Harlequin Dress has a long pointed snout with black stripes and bars that form a vertical rectangle on the body . With this , and marked with the chin and abdomen yellow clown who makes bass more interesting . Because it is easy for maintenance and hardy in nature , and clown dress makes an excellent choice for the beginner aquarist . As it matures , grows up to 11 inches and it is better to keep the tank at least 30 gallons . Bass Clown likes to spend his time sitting in , on , and around the rocks and caves , and therefore a lot of live rock and caves necessary to add in the tank . May prey on small crustaceans such as shrimp and crabs , making it safe in a reef tank , but with caution . Bass Clown can be fed with a variety of foods including fresh or frozen shrimp , clams , oysters , brine shrimp , mysis shrimp , krill and similar items . It thrives well in a temperature range of 74-82 degrees Fahrenheit , and a pH of 8.0 to 8.4 . Being semi - aggressive fish can get along with the larger community , but can be found in small fish or crustaceans scare tank mates . Clown takes a lot of cache bass to make them feel comfortable and need a thick bed of sand in the bathtub , because he prefers to dig in the bottom of the substrate .