I examined why anemonefishes, Amphiprion ocellaris, Amphiprion frenatus, and Amphiprion perideraion, which inhabit single host anemones, are monogamous and protandrous. Because they live in small groups ( 6 individuals) with a size hierarchy, they might have the environmental potential for polygyny. If the dominant fish were male, he could monopolize mating opportunities, and subordinates shoul...

Article history: Received: 18 February 2016 Accepted: 27 September 2016 Published online: 3 November 2016 Abstract Neoplasia affecting a variety of tissues has been documented in many fish species. However, there are few reports of neoplasia in the common clownfish, Amphiprion ocellaris. An adult female clownfish in a public display aquarium was diagnosed with a locally invasive tubular carcino...

Anemone¢shes (genera: Amphiprion and Premnas; family Pomacentridae) are a group of 28 species of coral reef ¢shes that are found in obligate symbiosis with large tropical sea anemones. A phylogenetic hypothesis based on morphological analyses of this group suggests that the ancestral anemone¢sh was a generalist with similar morphology to other pomacentrids, and that it gave rise to other anemon...

Clownfish live in social groups in which there is a size-based dominance hierarchy. In such a context, sonic cues could play a role in social organisation because dominant frequency and pulse length of sounds are strongly correlated with fish size. Data on the hearing ability of these fish are, however, needed to show that they have the sensory ability to detect the frequencies in their sounds....

Clownfishes Amphiprion sebae, A. clarkii, A. percula, A. ocellaris and Premnas biaculeatus were reared in captive condition and their parental care activities were studied. Role of both male and female in parental care and terminating in successful hatching of eggs studied is described. Site selection, clutch formation, spawning, guarding, mouthing and fanning of the eggs were quantified. A. se...