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Rochia nilotica Circular Top Shell, Commercial Top Shell

Rochia nilotica is commonly referred to as Circular Top Shell, Commercial Top Shell. Difficulty in the aquarium: There are no reports available yet that this animal has already been kept in captivity successfully. Toxicity: Toxic hazard unknown.


Profilbild Urheber Scott & Jeanette Johnson, Kwajalein Unterwater

Rochia-niloticus-jj-4953-050116_Rochia nilotica


Courtesy of the author Scott & Jeanette Johnson, Kwajalein Unterwater . Please visit www.underwaterkwaj.com for more information.

Uploaded by Muelly.

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lexID:
13066 
AphiaID:
1251282 
Scientific:
Rochia nilotica 
German:
Riesen-Kreiselschnecke 
English:
Circular Top Shell, Commercial Top Shell 
Category:
Snails 
Family tree:
Animalia (Kingdom) > Mollusca (Phylum) > Gastropoda (Class) > Trochida (Order) > Tegulidae (Family) > Rochia (Genus) > nilotica (Species) 
Initial determination:
(Linnaeus, ), 1767 
Occurrence:
Andaman and Nicobar Islands, Australia, Fiji, French Polynesia, Hawaii, Indo Pacific, Israel, Japan, Madagascar, Marschall Islands, New Caledonia, Papua New Guinea, Philippines, Solomon Islands, Sri Lanka, the Mediterranean Sea, Vanuatu, Vietnam 
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:
0 - 20 Meter 
Habitats:
Algae zones, Atoll, Coral reefs, Coral rubble substrate, Edges of reefs, Intertidal zone, Tidal Zone, Reef slopes, Rocky, hard seabeds, Sandy sea floors, Seawater, Sea water 
Size:
1.97" - 6.3" (5cm - 16,5cm) 
Temperature:
26,3 °F - 29,3 °F (26,3°C - 29,3°C) 
Food:
Algae (Algivore), algae grazer, epiphytes feeder, Detritus 
Difficulty:
There are no reports available yet that this animal has already been kept in captivity successfully 
Offspring:
Possible to breed 
Toxicity:
Toxic hazard unknown 
CITES:
Not evaluated 
Red List:
Not evaluated (NE) 
More related species
in this lexicon:
 
Author:
Publisher:
Meerwasser-Lexikon.de
Created:
Last edit:
2026-10-15 19:30:20 

Captive breeding / propagation

The offspring of Rochia nilotica are possible. Unfortunately, the number of offspring is not large enough to cover the demand of the trade. If you are interested in Rochia nilotica, please ask your dealer for offspring. If you already own Rochia nilotica, try breeding yourself. This will help to improve the availability of offspring in the trade and to conserve natural stocks.

Info

Rochia nilotica (Linnaeus, 1767)

Rochia nilotica, also known as Trochus niloticus, is the economically most important gastropod species in the tropical West Pacific.
The large snail with a circular shell is both an important traditional foodstuff and a leading export article used as a source of mother-of-pearl material for buttons and jewellery.

Rochia nilotica is typically found in shallow, sandy bottoms with algae in reefs, sometimes in areas with dead and occasional live coral patches.

Aquaristically, the large circular snails are very interesting, as they are mainly feeding on thread algae!

Synonymised names
Rochia niloticus (Linnaeus, 1767) · unaccepted (wrong gender agreement of...)
Tectus niloticus (Linnaeus, 1767) · unaccepted
Trochus flammeus Röding, 1798 · unaccepted > junior subjective synonym
Trochus montebelloensis Preston, 1914 · unaccepted > junior subjective synonym
Trochus niloticus Linnaeus, 1767 · unaccepted > superseded combination
Trochus zebra Perry, 1811 · unaccepted > junior subjective synonym

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