Three-band anemonefish

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Three-band anemonefish
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Family: Pomacentridae
Genus: Amphiprion
Species:
A. tricinctus
Binomial name
Amphiprion tricinctus
Schultz & Welander, 1953 [2]

The three-band anemonefish (Amphiprion tricinctus) is a species of anemonefish endemic to the Marshall Islands in the western part of the Pacific Ocean. Like all anemonefishes, it forms a symbiotic mutualism with sea anemones and is unaffected by the stinging tentacles of its host. It is a sequential hermaphrodite with a strict size-based dominance hierarchy; the female is largest, the breeding male is second largest, and the male nonbreeders get progressively smaller as the hierarchy descends. [3] They exhibit protandry, meaning the breeding male changes to female if the sole breeding female dies, with the largest nonbreeder becoming the breeding male. [4] The fish's natural diet includes zooplankton. [4]

Contents

Description

The body of A. tricinctus is yellow-orange at the snout, belly, and pelvic and anal fins, tending to dark brown or black at the tail. As the common name suggests, as an adult it has three white bands or bars. They can grow to be about 13 cm (5.1 in) long [4]

Color variations

As A. tricinctus is endemic to the Marshall Islands, no geographic variation is seen, bute variations to the proportions of orange and black occur, from predominately orange through to predominantly black and the occasional aberrant coloration. [5] Fish living with the host anemone Stichodactyla mertensii , Mertens' carpet sea anemone, are frequently black except for the snout and bars. [4]

Similar species

Two other species have three body bars and a dark tail, A. chrysogaster and A. fuscocaudatus, [4] but the species are geographically separated. Three other species of anemonefish are found in the Marshall Islands, A. chrysopterus, A. melanopus, and A. perideraion. [6] These are easily distinguished from A. tricinctus as A. chrysopterus has two body bars and a whitish caudal fin, A. melanopus only has a head bar, and A. perideraion has a distinctive white stripe on the dorsal ridge. [4] Genetic analysis has shown that A. tricinctus is closely related to A. clarkii and this clade is significantly different from the other species traditionally considered part of the A. clarkii complex. [7] [8]

Distribution and habitat

A. tricinctus is endemic to the Marshall Islands in the western part of the Pacific Ocean [4] and is found in lagoons and pinnacle and seaward reefs. Whilst it is most commonly found at depths of 3 to 40 m (9.8 to 131.2 ft), it is occasionally found hosted by solitary specimens of Entacmaea quadricolor on seaward reef slopes in excess of 40 m (130 ft) deep. [5]

Host anemones

The relationship between anemonefish and their host sea anemones is not random and instead is highly nested in structure. [9] A. tricinctus is highly generalised, being hosted by eight of the 9 host anemones found in the Marshall Islands. A. tricinctus is generally said to be associated with these species of anemone: [4] [7]

Many locations in the Marshall Islands have not been scientifically surveyed, [10] and A. tricinctus has been reported to be hosted by these species of anemone: [6]

Conservation status

Anemonefish and their host anemones are found on coral reefs and face similar environmental issues. Like corals, anemone's contain intracellular endosymbionts, zooxanthellae, and can suffer from bleaching due to triggers such as increased water temperature or acidification. Characteristics known to elevate the risk of extinction are small geographic range, small local population, and extreme habitat specialisation. [11] [12] A. tricinctus is an endemic species, confined to the Marshall Islands, and this species' ability to use a variety of anemone hosts is thought to reduce the risk of extinction associated with specialisation. [10]

In the aquarium

Specimens of A. tricinctus are occasionally for sale and the species has been bred in captivity. [13]

Notes

  1. The Marshall Islands are significantly outside the previously recorded range for M. doreensis, which is not otherwise reported east of New Guinea. [4]

Related Research Articles

Clarks anemonefish

Amphiprion clarkii, known commonly as Clark's anemonefish and yellowtail clownfish, is a marine fish belonging to the family Pomacentridae, the clownfishes and damselfishes.

<i>Heteractis magnifica</i>

Heteractis magnifica, also known by the common names magnificent sea anemone or Ritteri anemone, is a species of sea anemone belonging to the Stichodactylidae family native to the Indo-Pacific area.

Orange skunk clownfish

Amphiprion sandaracinos, also known as the orange skunk clownfish or orange anemonefish, is a species of anemonefish that is distinguished by its broad white stripe along the dorsal ridge. Like all anemonefishes it forms a symbiotic mutualism with sea anemones and is unaffected by the stinging tentacles of the host anemone. It is a sequential hermaphrodite with a strict sized based dominance hierarchy: the female is largest, the breeding male is second largest, and the male non-breeders get progressively smaller as the hierarchy descends. They exhibit protandry, meaning the breeding male will change to female if the sole breeding female dies, with the largest non-breeder becomes the breeding male.

Sebae anemone

The sebae anemone, also known as leathery sea anemone, long tentacle anemone, or purple tip anemone, is a species of sea anemone belonging to the family Stichodactylidae and native to the Indo-Pacific area.

Australian clownfish

Amphiprion rubrocinctus, also known as the Australian clownfish or red anemonefish, is a species of anemonefish that is endemic to north west Australia. Like all anemonefishes it forms a symbiotic mutualism with sea anemones and is unaffected by the stinging tentacles of the host anemone. It is a sequential hermaphrodite with a strict sized based dominance hierarchy: the female is largest, the breeding male is second largest, and the male non-breeders get progressively smaller as the hierarchy descends. They exhibit protandry, meaning the breeding male will change to female if the sole breeding female dies, with the largest non-breeder becomes the breeding male. The fish's natural diet includes zooplankton.

Bubble-tip anemone

Bubble-tip anemone is a species of sea anemone in the family Actiniidae. Like several anemone species, E. quadricolor can support several anemonefish species, and displays two growth types based on where they live in the water column, one of which gives it the common name, due to the bulbous tips on its tentacles.

Orange-fin anemonefish

The orange-fin anemonefish is a marine fish belonging to the family Pomacentridae, the clownfishes and damselfishes, found in the Western Pacific north of the Great Barrier Reef from the surface to 20 m, to include the Pacific Ocean between Queensland, Australia, and New Guinea to the Marshall and Tuamotus Islands. It can grow to 17 cm in length.

Saddleback clownfish

Amphiprion polymnus, also known as the saddleback clownfish or yellowfin anemonefish, is a black and white species of anemonefish with a distinctive saddle. Like all anemonefishes it forms a symbiotic mutualism with sea anemones and is unaffected by the stinging tentacles of the host anemone. It is a sequential hermaphrodite with a strict sized based dominance hierarchy: the female is largest, the breeding male is second largest, and the male non-breeders get progressively smaller as the hierarchy descends. They exhibit protandry, meaning the breeding male will change to female if the sole breeding female dies, with the largest non-breeder becomes the breeding male.

<i>Amphiprion akindynos</i>

Amphiprion akindynos, the Barrier Reef anemonefish, is a species of anemonefish that is principally found in the Great Barrier Reef of Australia, but also in nearby locations in the Western Pacific. The species name 'akindynos' is Greek, meaning 'safe' or 'without danger' in reference to the safety afforded amongst the tentacles of its host anemone. Like all anemonefishes it forms a symbiotic mutualism with sea anemones and is unaffected by the stinging tentacles of the host anemone. It is a sequential hermaphrodite with a strict size-based dominance hierarchy: the female is largest, the breeding male is second largest, and the male non-breeders get progressively smaller as the hierarchy descends. They exhibit protandry, meaning the breeding male will change to female if the sole breeding female dies, with the largest non-breeder becomes the breeding male. The fish's natural diet includes zooplankton.

Pink skunk clownfish

Amphiprion perideraion also known as the pink skunk clownfish or pink anemonefish, is a species of anemonefish from the skunk complex that is widespread from northern Australia through the Malay Archipelago and Melanesia. Like all anemonefishes, it forms a symbiotic mutualism with sea anemones and is unaffected by the stinging tentacles of the host. It is a sequential hermaphrodite with a strict size-based dominance hierarchy; the female is largest, the breeding male is second largest, and the male nonbreeders get progressively smaller as the hierarchy descends. They exhibit protandry, meaning the breeding male changes to female if the sole breeding female dies, with the largest nonbreeder becoming the breeding male.

<i>Amphiprion akallopisos</i>

The nosestripe clownfish or nosestripe anemonefish, skunk clownfish, Amphiprion akallopisos, is an anemonefish that lives in association with sea anemones. A. akallopisos is found in the Indian Ocean. It resides in shallow inshore reefs as deep as 15 m with a moderate to strong current. The skunk clownfish can also be kept in captivity by aquarists.

<i>Stichodactyla mertensii</i>

Stichodactyla mertensii, commonly known as Mertens' carpet sea anemone, is a species of sea anemones in the family Stichodactylidae. It is regarded as the largest sea anemone with a diameter of over 1 m (3.3 ft), the next largest being Heteractis magnifica, which has longer tentacles. This species has an oral disc that can be described as more ovoid than circular that contours to the surrounding substrate and is attached to the substrate by adhesive verrucae, which are wart-like projections. Its blunt or pointed tentacles are uniformly shaped, and are only about 1–2 centimetres (0.39–0.79 in) long. It contains obligate symbiotic zooxanthellae, and is a host to around half the species of anemonefish and one damselfish, Dascyllus trimaculatus.

<i>Amphiprion mccullochi</i>

Amphiprion mccullochi, also known as whitesnout anemonefish or McCulloch's anemonefish, is a species of anemonefish found in subtropical waters at Lord Howe Island and Norfolk Island.. It was named for Allan McCulloch, a former Curator of Fishes at the Australian Museum, Sydney. Like all anemonefishes it forms a symbiotic mutualism with sea anemones and is unaffected by the stinging tentacles of the host anemone. It is a sequential hermaphrodite with a strict sized based dominance hierarchy: the female is largest, the breeding male is second largest, and the male non-breeders get progressively smaller as the hierarchy descends. They exhibit protandry, meaning the breeding male will change to female if the sole breeding female dies, with the largest non-breeder becomes the breeding male.

<i>Amphiprion latezonatus</i>

Amphiprion latezonatus, also known as the wide-band anemonefish, is a species of anemonefish found in subtropical waters off the east coast of Australia. Like all anemonefishes, it forms a symbiotic mutualism with sea anemones and is unaffected by the stinging tentacles of its host. It is a sequential hermaphrodite with a strict size-based dominance hierarchy; the female is largest, the breeding male is second largest, and the male nonbreeders get progressively smaller as the hierarchy descends. They exhibit protandry, meaning the breeding male changes to female if the sole breeding female dies, with the largest nonbreeder becoming the breeding male.

<i>Amphiprion chagosensis</i>

Amphiprion chagosensis, the Chagos anemonefish, is a marine fish belonging to the family Pomacentridae, the clownfishes and damselfishes. It is named for the Chagos Archipelago in the Indian Ocean and it is endemic to the archipelago. The original specimens were collected at Diego Garcia Atoll, Chagos Archipelago.

<i>Amphiprion chrysogaster</i>

Amphiprion chrysogaster, the Mauritian anemonefish, is a marine fish belonging to the family Pomacentridae, the clownfishes and damselfishes. It is endemic to Mauritius and probably Réunion.

<i>Amphiprion barberi</i>

Amphiprion barberi, is a species of anemonefish that is found in the western Pacific Ocean. It was previously considered a geographic color variation of other anemonefish, initially Amphiprion rubrocinctus from 1972 and then Amphiprion melanopus from 1980 however further study and DNA sequencing resulted in A. barberi being described as a new species in 2008. Like all anemonefishes it forms a symbiotic mutualism with sea anemones and is unaffected by the stinging tentacles of the host anemone. It is a sequential hermaphrodite with a strict sized based dominance hierarchy: the female is largest, the breeding male is second largest, and the male non-breeders get progressively smaller as the hierarchy descends. They exhibit protandry, meaning the breeding male will change to female if the sole breeding female dies, with the largest non-breeder becomes the breeding male. The fish's natural diet includes zooplankton.

<i>Amphiprion leucokranos</i>

Amphiprion leucokranos is a naturally occurring hybrid anemonefish found in the western central Pacific Ocean. Like all anemonefishes it forms a symbiotic mutualism with sea anemones and is unaffected by the stinging tentacles of the host anemone. It is a sequential hermaphrodite with a strict dominance hierarchy, features which are critical to the direction of gene flow.

Amphiprion pacificus, is a species of anemonefish that is found in the western Pacific Ocean. Like all anemonefishes it forms a symbiotic mutualism with sea anemones and is unaffected by the stinging tentacles of the host anemone. It is a sequential hermaphrodite with a strict sized based dominance hierarchy: the female is largest, the breeding male is second largest, and the male non-breeders get progressively smaller as the hierarchy descends. They exhibit protandry, meaning the breeding male will change to female if the sole breeding female dies, with the largest non-breeder becomes the breeding male. The fish's natural diet includes zooplankton.

Amphiprion thiellei is thought to be a naturally occurring hybrid anemonefish found in the vicinity of Cebu, Philippines. Like all anemonefishes it forms a symbiotic mutualism with sea anemones and is unaffected by the stinging tentacles of the host anemone. It is a sequential hermaphrodite with a strict dominance hierarchy.

References

  1. Jenkins, A.; Allen, G.; Myers, R.; Yeeting, B. & Carpenter, K.E. (2017). "Amphiprion tricinctus". The IUCN Red List of Threatened Species . 2017: e.T188620A1903556. doi:10.2305/IUCN.UK.2017-2.RLTS.T188620A1903556.en.
  2. Schultz, L. P. (1953). "Review of the Indo-Pacific anemone fishes, genus Amphiprion, with descriptions of two new species". Proc. U. S. Natl. Mus. 103 (núm. 3323) (3323): 187–201, Pls. 9–10. doi:10.5479/si.00963801.103-3323.187.
  3. Buston PM (May 2004). "Territory inheritance in clownfish". Proc. Biol. Sci. 271 (Suppl 4): S252–4. doi:10.1098/rsbl.2003.0156. PMC   1810038 . PMID   15252999.
  4. 1 2 3 4 5 6 7 8 Fautin, Daphne G.; Allen, Gerald R. (1997). Field Guide to Anemone Fishes and Their Host Sea Anemones. Western Australian Museum. ISBN   9780730983651. Archived from the original on 18 October 2014.
  5. 1 2 "Marshall Islands - Amphiprion tricinctus". Kwajalein Underwater. Retrieved 26 September 2015.
  6. 1 2 3 4 "Marshall Islands - Anemones and their Inhabitants". Kwajalein Underwater. Retrieved 26 September 2015.
  7. 1 2 Litsios, G.; Sims, C.; Wüest, R.; Pearman P.B.; Zimmermann, N.E.; Salamin N. (2012). "Mutualism with sea anemones triggered the adaptive radiation of clownfishes". BMC Evolutionary Biology. 12 (11): 212. doi:10.1186/1471-2148-12-212. PMC   3532366 . PMID   23122007.
  8. DeAngelis, R. "What we really know about the diversity of Clownfish" . Retrieved 20 September 2015.
  9. Ollerton J; McCollin D; Fautin DG; Allen GR (2007). "Finding NEMO: nestedness engendered by mutualistic organization in anemonefish and their hosts". Proc R Soc B Biol Sci. 274 (1609): 591–598. doi:10.1098/rspb.2006.3758. PMC   1766375 . PMID   17476781.
  10. 1 2 3 Hobbs J.-P.A.; Beger, M.; De Brauwer, M.; Emslie, M.J. (September 2014). "North-eastern range extension of the anemone Stichodactyla haddoni to the Marshall Islands represents a new record of host use by the endemic anemonefish Amphiprion tricinctus". Marine Biodiversity Records. 7 (Suppl 4). doi:10.1017/S1755267214001055.
  11. Munday P.L. (2004). "Habitat loss, resource specialization, and extinction on coral reefs". Global Change Biology. 10 (10): 1642–1647. doi:10.1111/j.1365-2486.2004.00839.x.
  12. Hobbs J.-P.A.; Frisch A.J.; Ford B.M.; Thums M.; Saenz-Agudelo P.; Furby K.A.; Berumen M.L. (August 2013). "Taxonomic, spatial and temporal patterns of bleaching in anemones inhabited by anemonefishes". PLoS ONE. 8 (8): e70966. doi:10.1371/journal.pone.0070966. PMC   3738586 . PMID   23951056.
  13. "Three-band anemonefish". animal-world. Retrieved 24 September 2015.