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 "The Little Mermaid", but none of the romantic plot is set up when Billy shows up in the first place. It’s the same random meandering through well-worn sitcom plot clichés that keeps "Family Guy" saddled with the “lazy” label. If this rerun comes on as some mindless background filler, it’ll do the job dutifully, but it’s getting increasingly frustrating to watch the show come up with material for Adam West that always hits the mark, but never find a way to fit other high-profile guest appearances into the framework." Be Careful What You Fish For "Be Careful What You Fish