The Humu Humu Trigger, Rhinecanthus aculeatus, features a striking coloration with yellow, blue and black lines on a white body. It is sometimes known as the Picasso Trigger. Sometimes, the Humu Humu can emit an audible whirring sound. They are best kept away from other triggers, and in a tank with plenty of live rock.. They will feed on a varied carnivorous diet. The Humu Humu is relatively easy to care for and is the among the hardiest marine fish. It is reef safe but should be monitored with small inverts and corals. This is one of the most popular species of trigger and for good reason; they are absolutely stunning and also easy to care for.