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Trichonotus elegans Long-rayed Sand-diver, Threadfin Sand-diver

Trichonotus elegans is commonly referred to as Long-rayed Sand-diver, Threadfin Sand-diver. Difficulty in the aquarium: There are no reports available yet that this animal has already been kept in captivity successfully. A aquarium size of at least 2000 Liter is recommended. Toxicity: Toxic hazard unknown.


Profilbild Urheber Scott & Jeanette Johnson, Kwajalein Unterwater

Elegant sand diver, Trichonotus elegans,15cm, Bali 2022

Sandy slopes are home to small schools of worm fish or sand divers, Trichonotus elegans. Males display long thread-like dorsal fin spines as they defend their harem of females. 6 inches (15cm)
Courtesy of the author Scott & Jeanette Johnson, Kwajalein Unterwater . Please visit www.underwaterkwaj.com for more information.

Uploaded by Muelly.

Image detail


Profile

lexID:
4102 
AphiaID:
279119 
Scientific:
Trichonotus elegans 
German:
Fadenflossen-Sandtaucher, Lang-Strahlen Sandtaucher 
English:
Long-rayed Sand-diver, Threadfin Sand-diver 
Category:
Sand diver 
Family tree:
Animalia (Kingdom) > Chordata (Phylum) > Actinopterygii (Class) > Perciformes (Order) > Trichonotidae (Family) > Trichonotus (Genus) > elegans (Species) 
Initial determination:
Shimada & Yoshino, 1984 
Occurrence:
(the) Maldives, Bali, Coral sea (Eastern Australia), Fiji, Guam, Indonesia, Japan, Marschall Islands, Maumere, Micronesia, New Caledonia, Palau, Papua, Papua New Guinea, Raja Amat, Sumatra, The Ryukyu Islands, Western Indian Ocean, Western Pacific Ocean 
Marine Zone:
Subtidal, sublittoral, infralittoral, deep zone of the oceans from the lower limit of the intertidal zone (intertidal) to the shelf edge at about 200 m water depth. neritic. 
Sea depth:
10 - 40 Meter 
Habitats:
Coastal waters, Coral reefs, Coralline soils, coral quarry, Gravel soils, Rubble rocks, Lagoons, Reef slopes, Rubble floors, Sandy sea floors, Seawater, Sea water 
Size:
up to 7.09" (18 cm) 
Temperature:
76.28 °F - 83.84 °F (24.6°C - 28.8°C) 
Food:
Carnivore, Zooplankton 
Tank:
439.96 gal (~ 2000L)  
Difficulty:
There are no reports available yet that this animal has already been kept in captivity successfully 
Offspring:
Not available as offspring 
Toxicity:
Toxic hazard unknown 
CITES:
Not evaluated 
Red List:
Least concern (LC)  
Related species at
Catalog of Life:
 
Author:
Publisher:
Meerwasser-Lexikon.de
Created:
Last edit:
2025-05-03 12:47:00 

Info

Trichonotus elegans Shimada & Yoshino, 1984

Found in coastal reef slopes and deep outer reef lagoons in current channels. Usually in large groups with several large males. Found hovering above sandy slopes. Usually forms a harem of one male-phase fish and about a dozen female-phase fish. Normally buried when no current is running.

External links

  1. Australian Museum (en). Abgerufen am 03.05.2025.
  2. Wikipedia (en). Abgerufen am 03.05.2025.
  3. Wikipedia (de). Abgerufen am 03.05.2025.

Pictures

Male


Commonly

Sanddiver (Trichonotus elegans), 2018
1
Copyright J.E. Randall, Hawaii
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