Ichthyophobia – Fear of fishes
The fear of eating fish, touching raw fish, or holding dead fish is ichthyophobia. This includes fear of sharks and other big fish that look haunting. The Redditor’s fear of fish seems to be at the high end as she recalled a traumatic experience she once had during fishing.
American psychologist John B. Watson, a renowned name in behaviorism, describes the conditioning of fear through a certain process called graduated exposure therapy.