Size: Around seven centimeters Lifespan: Three to six years Temperament: Peaceful Diet: Omnivore Care Level: Easy The movie Finding Nemo has made this type of fish very popular among households with children. Clownfish are beautiful, friendly, and interesting to watch. They are also hardy, resistant to most diseases, and tend not to be fussy eaters. If you are interested in breeding fish in your home aquarium, clownfish are an excellent