The headless Luohan fish does not have a big bulge on its forehead. The head is triangular, and the back to the head is a relatively smooth line. In fact, there is basically not much difference between the Luohan fish that does not start and those that start.
When raising Luohan fish, if they do not start after breeding for a long time, it may be that the surrounding environment is not suitable. , so it needs to be adjusted. The simplest way is to change it to a fish tank. The probability of it starting after changing to a new environment is about 30%.