The Brown Clownfish (Premnas biaculeatus). It is a species of fish in the Pomacentridae family and the Amphiprioninae subfamily. It is the only clownfish that does not belong to the genus Amphiprion, as it is the only species of the genus Premnas.
Summary
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- 1 Features
- 2 He lives
- 3 Geographic distribution
- 4 Food
- 5 Playback
- 6 Fountains
Features
Premnas biaculeatus, brown clownfish, is an aquatic vertebrate belonging to the Pomacentridae family and Perciformes order. Its length oscillates on average 14 cm, although species that exceed the previous value have been recorded. Sexual dimorphism is present to the extent that males are smaller than females and their color is browner than in male specimens. They are fish that have a red-brown coloration, highlighting their three vertical lines (white or yellow) that they maintain in the initial, middle and final part of their body , as well as the presence of one or two preopercular spines. Like the members of its family, the fins with rounded ends stand out.
Habitat
Premnas biaculeatus is a sedentary fish that likes to stay in water at a temperature not lower than 24ºC. It inhabits marine waters associated with coral reefs in a depth range of between 1 to 15 meters. The adults stay in reef areas near the coast, usually live in pairs and perform symbiosis with the anemone, especially with the species Entacmaea quadricolor.
Geographic distribution
It is distributed in the Indo-Pacific Ocean, from India and Indonesia, to the Solomon Islands. It is native to Australia, Burma, Fiji, India (Andaman), Indonesia, Malaysia, Micronesia, New Caledonia, Palau, Papua New Guinea, Philippines, Solomon Islands, Thailand, Vanuatu, and Vietnam. They are non-migratory fish so they remain in the territory chosen by the male and which he fiercely guards against any intruder. The Entacmaea quadricolor anemone is essential for the brown clownfish to complete its biological cycle. They live to be eight or ten years old.
Feeding
In nature, it feeds mainly on zooplankton and benthic algae.
Reproduction
They present sexual dimorphism, with males being smaller than females. Like all clownfish, they are protandrous hermaphrodites, they are all born male, but they can change sex, being the largest and/or dominant individuals the ones that normally mutate into females. Reproduction can take place throughout the year, depending on the water temperature, being more frequent in spring and summer, with rising temperatures.
They are oviparous, and the demersal eggs are adhered by mucus to the substrate. The eggs, which can vary from 100 to 1000 per clutch,9 are transparent and elliptical, and measure between 3-4 mm. The male is in charge of oxygenating the spawn until the birth of the fry.
ºTrados by currents. This phase is the most dangerous for them if they do not find food. After this period, they leave the water column and swim to the bottom, transforming, in about a day, their color pattern to that of adults.
Its life expectancy in nature is between 6 and 10 years, reducing between 3 and 5 in captivity, in optimal conditions.
