If there is a clear, fishy-smelling fluid in the male penis, it is recommended to consider hygiene problems, folliculitis, circumcision and so on. 1. Hygiene problems: If you can’t change your underwear in time, the underwear is not breathable, leading to scrotal moisture, local bacterial reproduction, and upstream infections may appear in the male penis with clear, fishy-smelling fluid. 2. Folliculitis: if you can not effectively clean the local skin, may further form boils, carbuncles, etc., the local follicle ulceration will also appear transparent fishy odor. 3. Circumcision problem: if the foreskin is too long or the formation of the foreskin, the long-term accumulation of the formation of foreskin scale, easy to cause anaerobic bacteria gathered, such as gas-producing bacilli, etc., fungal infections can also cause fishy odor. Transparent color fishy smell in the penis may also be caused by other factors, need to pay attention to avoid further infections, it is recommended to go to the regular hospital in time to seek professional help, and strive for early recovery.