Tomato
anemonefish
Amphiprion frenatus
Family Pomacentridae
updated
Sep 2020
if you
learn only 3 things about it ...
The fish needs its host anemone. Do not disturb it or
the anemone.
One anemone may be home to many anemonefishes.
These
fishes are threatened by over-collection for the aquarium
trade. Don't keep Nemo in your home, he belongs in the
ocean. |
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Where
seen? This
beautiful anemonefish with a white 'head band' lives mainly in the Bubble
tip sea anemone which is not very
commonly encountered, usually on good reefs on our Southern shores. There is a report of it being found in a Magnificent anemone too.
Features: 5-14cm. Body red to black
with one black-edged white bar just behind the eyes. There may be
a second black-edged white bar in the middle of the body. Juveniles
are usually red and may have 2-3 narrow white bars. |
Kusu Island, Aug 04 |
Terumbu Bemban, Jun 10 |
Amazing gender switch: Anemonefishes
can change their gender. Often, a sea anemone will be home to several
anemonefishes of the same species. Usually the largest anemonefish
in the group is the female and the next largest is the functioning
male (although he is often less than half her size). Besides being larger, females have blackish
sides while males are a lot smaller and lack the blackish colour being
mostly red overall. If the female is removed from the
group, the male becomes a female and the next largest becomes the
dominant male. In this way, anemonefishes can continue to breed
throughout the year. Small anemonefishes are not necessarily younger,
just lower in the "pecking order". It is believed they
remain small because of the constant harassment by the dominant
pair.
Small anemonefishes are thus NOT the babies of larger anemonefishes in the same anemone. |
Females larger and more blackish, males smaller and usually all red.
Terumbu Semakau, May 18
Photo shared by Loh Kok Sheng on facebook
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Terumbu Raya, Jun 15
Photo shared by Toh Chay Hoon on facebook. |
Pulau Semakau, Apr 17
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What does it eat? It feeds on
plankton (mostly copepods) and also munches on bottom-dwelling algae.
Human uses: Unfortunately, these
fishes are taken in large numbers from the wild for the aquarium trade.
The harvest may involve the use of cyanide or blasting, which damage
the habitat and kill many other creatures. Like other fish and creatures
harvested from the wild, most die before they can reach the retailers.
Without professional care, most die soon after they are sold. Often
of starvation as owners are unable to provide the small creatures
and plants that these fishes need to survive. In artificial conditions,
many succumb to diseases and poor health. Those that do survive are
unlikely to breed.
There have been some success in breeding anemonefish for the aquarium
trade. Although captive bred anemonefish are hardier, they are more
expensive. Harvesting from the wild will probably continue so long
as there are unscrupulous traders and aquarists. Thus, anemonefishes continue to
be unsustainably harvested from the wild. The pressure on wild populations
has risen tremendously due to the huge demand following the popular
"Finding Nemo" cartoon.
Status and threats: The Tomato
anemonefish is listed as 'Vulnerable' on the Red List of threatened
animals of Singapore. Like other creatures of the intertidal zone,
they are affected by human activities such as reclamation and pollution.
Over-collection can also have an impact on local populations. According
to the Singapore Red Data Book, "habitat protection and strict
policing against illegal collection are required" to conserve
our anemonefishes. |
Tomato
anemonefishes on Singapore shores |
Other sightings on Singapore shores |
Tanah Merah, Jul 09
Photo shared by Loh Kok Sheng on his
blog. |
Tanah Merah, Jun 10
Photo shared by Loh Kok Sheng on his
flickr. |
Tanah Merah Ferry Terminal, Jun 22
Photo shared by Loh Kok Sheng on facebook. |
Sentosa Serapong, Jul 21
Photo shared by Jianlin Liu on facebook. |
|
|
St John's Island, Apr 16
Photo shared by Loh Kok Sheng on his
blog. |
Pulau Hantu, Jul 07
Photo shared by Loh Kok Sheng on his
blog. |
Terumbu Hantu, Apr 12
Photo shared by Russel Low on facebook. |
Pulau Jong, May 16 (seen diving)
Photo shared by Tay Ywee Chieh on facebook. |
Eggs laid near the host sea anemone. |
Terumbu Raya, Jun 15
Photo shared by Toh Chay Hoon on facebook. |
Pulau Semakau (East), Aug 21
Photo shared by Loh Kok Sheng on facebook. |
Terumbu Semakau, May 10
Photo shared by Loh Kok Sheng on his
flickr. |
|
Terumbu Raya, Jun 18
Photo shared by Loh Kok Sheng on facebook. |
Terumbu Raya, Jul 09
Photo
shared by James Koh on his
blog. |
Beting Bemban Besar, Jun 15
Photo shared by Russel Low on facebook. |
Teumbu Pempang Laut, Aug 16
Photo shared by Loh Kok Sheng on facebook. |
Pulau Senang, Aug 10
Photo shared by Loh Kok Sheng on his
flickr . |
Pulau Senang, Jun 10
Photo shared by Loh Kok Sheng on his
flickr . |
Pulau Salu, Apr 21
Photo shared by Loh Kok Sheng on facebook. |
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Links
References
- Daisuke Taira. October 2017. First record of the host-specific anemonefish Amphiprion frenatus inhabiting Heteractis magnifica during a mass bleaching event. Bulletin of Marine Science, Miami, 94(1). DOI: 10.5343/bms.2017.1065
- Toh Chay Hoon. 26 September 2014. Tomato anemonefish off Lazarus-Seringat Island. Singapore Biodiversity Records 2014: 265.
- Davison,
G.W. H. and P. K. L. Ng and Ho Hua Chew, 2008. The Singapore
Red Data Book: Threatened plants and animals of Singapore.
Nature Society (Singapore). 285 pp.
- Allen, Gerry,
2000. Marine
Fishes of South-East Asia: A Field Guide for Anglers and Divers.
Periplus Editions. 292 pp.
- Lieske, Ewald
and Robert Myers. 2001. Coral
Reef Fishes of the World
Periplus Editions. 400pp.
- Lim, S.,
P. Ng, L. Tan, & W. Y. Chin, 1994. Rhythm of the Sea: The Life
and Times of Labrador Beach. Division of Biology, School of
Science, Nanyang Technological University & Department of Zoology,
the National University of Singapore. 160 pp.
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