Fish intelligence in paradise fish ("Macropodus opercularis") which avoid places where they have experienced a single attack by a predator and continue to avoid for many months. A number of studies have shown that fish can retain information for months or years. Anecdotally, channel catfish ("Ictalurus punctatus") can remember the human voice call announcing food five years after last hearing that call. Goldfish remember the colour of a tube dispensing food one year after the last tube presentation. Sockeye salmon still react to a light signal that precedes food arrival up to eight months since the last reinforcement. Some common rudd and
Be Careful What You Fish For Emily, he finds that she already has a boyfriend named Devin, causing Brian to do what Stewie wanted him to do. As Miss Emily is being arrested by the police, Brian quotes "What you did to those children, there's a special place in Hell for people like you." As the police car drives off, Stewie then jokes with Brian about how she is going to be abused in women's prison as they head off to find Stewie a new daycare center. In its original broadcast on February 19, 2012, "Be Careful What You Fish For" was watched by 5.39 million