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
Sockeye Fire the Iditarod Trail Sled Dog Race and other mushing events, perished in the fire. A local kennel owned by veteran Iditarod musher DeeDee Jonrowe was destroyed. Jonrowe also lost her home, several pets and a flock of chickens in the fire. At least six dogs are known to have perished in the fire. Early on during the incident, emergency officials determined that the fire was "human caused". On July 13, 2015 it was reported by multiple news sources in Alaska that Greg Imig and Amy Dewitt of Anchorage faced numerous charges in relation to the Sockeye Fire, including reckless endangerment,