Aeoliscus strigatus

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Aeoliscus strigatus
Aeoliscus strigatus Prague 2011 1.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Syngnathiformes
Family: Centriscidae
Genus: Aeoliscus
Species:
A. strigatus
Binomial name
Aeoliscus strigatus
(Günther, 1861) [2]
Synonyms [1]
  • Amphisile strigataGünther, 1861
  • Centriscus strigatus(Günther, 1861)

Aeoliscus strigatus, also known as the razorfish, jointed razorfish or coral shrimpfish, is a member of the family Centriscidae of the order Syngnathiformes. This unique fish adopts a head-down tail-up position as an adaptation for hiding among sea urchin spines. [3] The razorfish is found in coastal waters in the Indo-West Pacific. [4] Its natural habitat includes beds of sea grass and coral reefs, where sea urchins are found. [5]

Contents

Description

In Prague sea aquarium Aeoliscus strigatus Prague 2011 2.jpg
In Prague sea aquarium

The razorfish is easily identifiable due to its particular body shape as well as its way of moving in synchronised groups, head down. It is a small fish with a maximum size of 15 cm (5.9 in) long, and its body is stretched, ending with a fine, long "beak". Its fins are considerably reduced and transparent. The dorsal surface of the razorfish is covered by protective bony plates, which extend past the end of the body and over the tail fin, which terminates in a sharp spine. A black to brown median band runs the length of the fish, also crossing the eyes. The color of the body is variable with the habitat. In seagrass environment, the background color of the body can be greenish-yellow with light brown stripes. In open areas like sand patch, rubble or close to coral reef, then the body coloration occurs to be light silver with a black to brown stripe. [6] There is no known sexual dimorphism.

Ecology

The razorfish eats mainly small brine shrimp and other small invertebrates. [3] [7] They have also been known to eat minute crustaceans. [8] In the wild they have been observed hiding in the spines of sea urchins, both as a defense mechanism and as a hunting mechanism. When threatened by larger fish, the razorfish darts away to a nearby sea urchin or staghorn coral [9] for protection. Razorfish hunt among sea urchin spines, especially those of the genus Diadema , [9] and wait for small invertebrates that feed on the urchins. When their prey gets close, the razorfish will dart out and try to catch its dinner. [3]

This species is oviparous and the eggs and larvae are pelagic, the juveniles settle when they attain 20 millimetres (0.79 in) in length, frequently choosing to live among the spines of Diadema sea urchins. [10]

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References

  1. 1 2 Cameron, C. & Pollom, R. (2016). "Aeoliscus strigatus". The IUCN Red List of Threatened Species . 2016: e.T65135062A67618768. doi: 10.2305/IUCN.UK.2016-1.RLTS.T65135062A67618768.en .
  2. ITIS Standard Report Page: Aeoliscus strigatus
  3. 1 2 3 "Eyewitness handbooks Aquarium Fish: The visual guide to more than 500 marine and freshwater fish varieties" By Dick Mills. Page 283
  4. "Fatos sobre Aeoliscus strigatus - Enciclopédia da Vida". Archived from the original on 2013-10-15. Retrieved 2013-08-28.
  5. Ecology Summary – Aeoliscus strigatus
  6. Kuiter, Rudie.Seahorses and their relatives. Aquatic Photographics, 2009, p304. ISBN   9780977537211
  7. Ewald Lieske & Robert Myers. Coral reef fishes. Princeton Univiversity Press,1995, p 15. ISBN   0691004811
  8. Aeoliscus strigatus – Jointed Razorfish – Discover Life
  9. 1 2 Froese, Rainer; Pauly, Daniel (eds.) (2018). "Aeoliscus strigatus" in FishBase . February 2018 version.
  10. Dianne J. Bray & Vanessa J. Thompson. "Aeoliscus strigatus". Fishes of Australia. Museums Victoria. Retrieved 14 June 2018.