The Assassin Snail, or Snail Eating Snail, is a small, easy-to-keep freshwater invert. Under aquarium conditions snails mate above the surface of the substrate and then the females deposit their eggs one at a time in small, semi-transparent capsules (sacs) on solid surfaces such as stones and plant stems. Asian Pacific Journal of Tropical Biomedicine, 6(6):539-545. http://dx.doi.org/10.1016/j.apjtb.2016.01.015, Aquaportail, 2008. Assassins are very sensitive to change, so make sure you keep your parameters stable. Assassin snails prefer slow-flowing water, so make sure your flow isn’t too strong. C. helena is a small predatory snail (feeding on both live prey, including other snails, and carrion), which belongs to the same family as the marine whelks but is confined to freshwater habitats of various kinds. Some common ones include, seeing white spots on their shells, calcium deficiency, poor/instability, or just any copper at all in the water quality. Note the loss of the apex commonly seen on the adult shells. They will obliterate unwanted pest snails and eliminate the need to use harsh, snail-killing chemicals in your aquarium. The Assassin snail is a beautiful, spirally yellow-black striped snail with a strikingly ribbed tower-shaped shell. It has not been reported in the literature as an invasive species but is potentially a threat in warmer regions for a number of reasons. It was classified in the newly established subfamily Anentominae within Nassariidae in 2017. Preliminary taxonomic study of land snail and freshwater mollusk species in Sakaeo Province, Eastern Thailand., 10 pp. Especially about breeding (like hatching period or number of laid eggs and so on). (2016) collected Clea helena from the Chao-Phraya Basin in Thailand and didn’t find any carrying trematodes, specimens from other parts of their range have not so far been examined. $18.24. Diversity of mollusks in the Lam Ta Khong reservoir, Nakhon Ratchasima, Thailand. £23.99. About Assassin snail (Clea Helena) Once I started reading about this snail, I found so much bullsh… contradictory information on the internet! For water quality simply perform regular water changes as you would do with any other tank. Tesana S, 2002. http://dx.doi.org/10.1371/journal.pone.0161130. Clea helena is a Southeast Asian freshwater snail closely related to the marine whelks (family Buccinidae). This listing is for a group for three baby assassin snails. The white spots are often parasites. Sripongpun G, 2003. They won’t eat algae (so don’t get them to solve any algae issues); shrimp fry and small snail eggs may be on their menu. Their name comes from their carnivorous diet choices. Nonetheless, Ng et al. However, its scientific name is Clea Helena or formerly known as Anentome Helena. While the species naturally occurs in adjacent Malaysia, the authors believe the species got into Kranji Reservoir via the aquarium trade. [English title not available]. Anentome helena: fiche pour maintenance en aquarium. In: Anentome helena: fiche pour maintenance en aquarium, http://www.aquaportail.com/fiche-invertebre-736-anentome-helena.html, Boon-ngam P, Sriyarun J, Tanamai S, Dumrongrojwattana P, 2010. 4,632 sold. PLoS ONE, 11(8):e0161130. The higher classification of the Gastropoda of Bouchet and Rocroi (2005) places Clea in clade Neogastropoda of the Caenogastropoda. Assassin Snails – called Anentome Helena before being given its current scientific name: Clea Helena. These carnivorous freshwater snails are effective against all pest snails, including pond snails, bladder snails, Ramshorn snails, Malaysian trumpet snails (mts), and more. Assassin Snail (Clea Helena) Snail Species Profile Article Contains. When several references are cited, they may give conflicting information on the status. © Copyright 2021 CAB International. Assassin snails do not care about the plants in the tank and they don’t use them for cover or food. Nationwide Fish 5 Live Freshwater Assassin Snails (Clea Helena) 0.5" - 1" 4.0 out of 5 stars 154. SiputKuning (Yellow Snail) Blog, 2 January 2010. http://siputkuning.blogspot.com/2009_12_27_archive.html. 353 sold. $15.98. $22.00. Ng TingHui; Foon JunnKitt; Tan SiongKiat; Chan MKK; Yeo DCJ, 2016. Aquaportail, 2008. Any measurable levels of copper in the tank are most likely fatal so you need to avoid that at all costs. The distribution in this summary table is based on all the information available. (2016a) comment on the fact that the feeding habits of this species are based on aquarium observations rather than their natural behaviour in the wild. Small aquatic invertebrates including snails. Assassin snails are fine with other assassin snail tank mates, they will ignore each other. They primarily inhabit small bodies of water, and are most commonly found in ponds or ditches. Species. This organism does not have any significant commercial value outside the aquarium industry, hence the prevalence of common names featured in the aquarium literature. Assassin snail appearance Clea helena is definitely not the most inconspicuous assassin out there. Origins, Natural Habitat of the Assassin snails. Decorations, such as rocks, driftwood, et cetera aren’t necessary but assassin snails will use them to lay eggs. Red Cherry Shrimp (Grade A) - 10 Pack 4.4 out of 5 stars 535. This species is similar in shape and size, but its shell is more or less uniformly brown. The Assassin Snail (Clea helena) has been welcomed by fishkeepers as the single best all-around snail-killing animal in the hobby. 10 x assassin snail live snail eater clea helena fish tank aquarium. For example, Ng et al. Although this is a relatively hardy snail, it naturally requires good water quality (preferably with decent current) and a soft sand substrate in which to burrow. Opportunistic carnivores, the Assassin Snail feeds on both live prey and scavenged detritus. When adding new Assassin Snails to a tank, go so slowly and gently. Assassin snails will often breed in captivity. In stock on January 12, 2021. Very little is known about the ecology of this species beyond records of its presence/absence at particular locations within its range. Bouchet P; Rocroi JP, 2005. unpaginated. Otherwise, Clea helena is a peaceful community tank resident. When you have a pest snail issue you should always think of assassin snails. Wallingford, UK: CABI, Ng TingHui, Foon JunnKitt, Tan SiongKiat, Chan M K K, Yeo D C J, 2016. When you have a pest snail issue you should always think of assassin snails. Results from previous surveys indicated that it had been introduced within the last 5 years, Tropical monsoon climate ( < 60mm precipitation driest month but > (100 - [total annual precipitation(mm}/25])), 100 mg/l upwards recommended aquarium maintenance range, Does not occur in brackish water in the wild, Recommended aquarium maintenance range; tolerance in the wild unknown but likely to be similar, Capable of securing and ingesting a wide range of food, Modification of natural benthic communities, Highly likely to be transported internationally deliberately, Difficult to identify/detect as a commodity contaminant. Natural born killers. As I began to do my research on Assassin Snails, I read so many contradictory articles on the internet, I was completely amazed. The Southeast Asian Journal of Tropical Medicine and Public Health, 33(4):733-738. Assassin Snail Clea helena (formerly Anentome helena) Report. They enjoy eating other small snails. Not hermaphrodites, so need a male and female counterpart in order to reproduce. Browse more videos. Cassel. http://kucon.lib.ku.ac.th/dbstat/download_count.php?rec_no=KC4805019&mfn=012249&db=kucon, CABI, Undated. Philippi RA, 1847. (2016a) report occurrence in Singapore as the first non-native establishment of this species, further asserting the introduction was via the aquarium trade. Malacologia, 47(1/2):397 pp. Little is known about the ecology of C. helena in the wild, but it is known to occur in a range of freshwater habitats including streams, rivers, lakes and reservoirs, typically in places with a soft substrate such as mud. Assassin snails or Clea helena (formerly Anentome helena) are carnivorous snails commonly found in the aquarium industry. Existing choices were limited to things like pufferfish and the larger loaches, particularly botiine loaches, but these fish are often difficult to maintain, and in the case of puffers especially, tend to be nippy towards their tankmates. Conscientious Aquarist Magazine, 6(4). Although Anucherngchai et al. The keys are tank size and stability. They will be fine in most community tanks. CaribSea Eco-Complete 20-Pound Planted Aquarium, Black 4.7 out of 5 stars 3,737. Abbildungen und Beschreibungen neuer oder wenig gekannter Conchylien. In the front it has a characteristic notch from which the Assassin snail sticks up its trunk. C. helena is traded as an aquarium species. £4.99. Hatching and development are imperfectly known, but aquarium reports suggest that the juveniles hide in the substrate most of the time, and only become obvious once they are about six months old by which time they have a shell length of around 8 mm. 10 pp. assassin snail aquatics live snail eater cleaner helena fish tank aquarium uk. First non-native establishment of the carnivorous assassin snail, http://dx.doi.org/10.1371/journal.pone.0161130, http://siputkuning.blogspot.com/2009_12_27_archive.html, Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. The members of this genus are known as assassin snails for their habit of eating other snails. They are particularly adept at handling populations of pond snails, Malaysian trumpet snails, ramshorn snails, bladder snails, and more! Monks N, 2009. Clea helena is a Southeast Asian freshwater snail closely related to the marine whelks (family Buccinidae). There is an obvious siphonal notch through which the siphon protrudes and the operculum is brown. Clea helena was originaly described as Anentome helena and both names are widely used for this species; Anentome is frequently used as a subgenus, i.e., as Clea (Anentome) helena. Clea helena; a variety of adult and juvenile shells. In: Silpakorn University International Journal - Science, 3 (1-2) 168-193. (Anentome helena: fiche pour maintenance en aquarium). In some locations it may be amongst the dominant gastropod species. Assassin snail is often called killer snail or bumblebee snail as well. There are two sexes but they are nearly impossible to tell apart. Detailed coverage of invasive species threatening livelihoods and the environment worldwide. Molluscs for sale: Assessment of freshwater gastropods and bivalves in the ornamental pet trade. 1:57. Ng et al. Assassin snails Assassin snail Clea helena *Young, healthy, tank raised assassin snails. [citation needed] Taxonomy. Practical Fishkeeping, 2010(13):14-15. Assassin Snail in Aquatic Community. It conforms to its family in terms of shape, having a tightly coiled shell with moderately deep radial ribs and one, two, or three brown spiral bands. (Anentome helena: fiche pour maintenance en aquarium.) The snail is, however, harmless to shrimp and fish. Archiv für Molluskenkunde, 105:1-405. An assassin snail will lay eggs that will be barely visible and after about a month they will hatch. They are not challenging to take care of as long as the water conditions are right, and they have plenty of food. Assassin snails are a carnivorous species and as such will eat snails smaller than them. Generate a print friendly version containing only the sections you need. Sripongpun G, 2003. Assassin snails can be affected by multiple factors. SiputKuning, 2010. Unfortunately, little is known about its ecology in the wild. or best offer. Assassin snails or Clea helena (formerly Anentome helena) are carnivorous snails commonly found in the aquarium industry. Further details may be available for individual references in the Distribution Table Details section which can be selected by going to Generate Report. As the name suggests, these snails are predators, and they will prey on snails like ramshorn and trumpet snails. Classification and nomenclator of gastropod families. Freshwater whelks, anyone? Playing next. Growth rate is slow (when they are well fed they lay strings of eggs, one at the time. None reported, but a potential predator on small aquatic snails. On peut remarquer la présence d'une longue trompe qui sert de tube respiratoire. Tropical rainforest and tropical monsoon climates as preferred climates for these snails. http://www.aquaportail.com/fiche-invertebre-736-anentome-helena.html, Boon-ngam P; Sriyarun J; Tanamai S; Dumrongrojwattana P, 2010. CABI is a registered EU trademark. The term “whelk” is given to a few snail species from a variety of families, but the Buccinidae family contains the “true whelks”; a carnivorous group of snails. Anucherngchai S; Tejangkura T; Chontananarth T, 2016. It is dioecious. In the wild inhabit in not very deep waters with pure water on the South-West of Asia – in Indonesia, Thailand. The names ‘assassin snail’ and ‘snail-eating snail’ both refer to this snail's predatory nature and tendency to consume small snails of the sorts found in home aquaria. £4.99 to £12.99. Its bright yellow and dark brown banded trumpet shell is sure to draw attention! Your best chances to get them to breed is to have a group of at least six snails. Assassin snails reach ~1” long but that can vary slightly depending on their diet. This means that even if you're not looking to have it massacre some … Such data that does exist comes from aquarium observations that may or may not be relevant to understanding its natural history in the wild. Assassin snails will help keep pest snail populations in check while adding beauty. Finally, under aquarium conditions at least, it will readily consume small aquatic snail species that it would not encounter in its natural habitat, and there is no reason to suppose it would be any less predatory if introduced populations became established outside the species’ natural range. One or more of the features that are needed to show you the maps functionality are not available in the web browser that you are using. Preliminary taxonomic study of land snail and freshwater mollusk species in Sakaeo Province, Eastern Thailand. The distinctive shape of this species, its yellowy shell with brown spiral markings, and its predatory habits make it easily distinguished from all other aquarium snails. Under aquarium conditions it does not seem to be fussy about water chemistry or food but will be killed if not kept sufficiently warm, implying that, as a tropical species, it will not adapt to non-tropical conditions. C. helena is transported widely as an aquarium species (Ng et al., 2016a). For further details see Brandt (1974). Diversity of mollusks in the Lam Ta Khong reservoir, Nakhon Ratchasima, Thailand. free postage. Most popularly used in order to get rid of pest snails or for their decorative bright striped appearance. free postage . Your assassin snails won’t pay attention to most fish. Even if you don’t have a pest snail issue assassin snails are a nice looking, stripey snail that won’t harm any of your plants. Assassin Snail Size. It is also extraordinarily eye-catching in planted aquariums, featuring a bright yellow with chocolate brown striped shell. Ng et al. Please consider upgrading your browser to the latest version or installing a new browser. Despite substantial holdings of Vietnamese molluscs in the collection of the Academy of Natural Sciences in Philadelphia, USA, there are no specimens of C. helena (DG Robinson, USDA-APHIS, USA, personal communication, 2012). So hobbyist need to make sure their tank has sufficient size and capacity to support an adult snail’s life. Make sure to keep your snail's tank well heated and filtered. Firstly, it is widely traded as an aquarium animal and can be commonly found in aquarium shops in North America, Europe and Asia already, and will likely be regularly traded elsewhere in due course. If you want to add other snails they will have to be bigger (such as adult nerites or mystery snails). An Assassin Snail found in stores will generally be about 3/4 of an inch long. Assassin Snail (Clea Helena) € 2.50 inc. VAT € 0.05 Cashback Assassin snails are commonly used to control the population of other invasive snails introduced in aquaria with purchased plants. Trematodes pose a public health problem across large parts of the world, and many of these have a life cycle that involves freshwater snails. Freshwater whelks, anyone? Assassin snails (clea Helena) are one of the most useful animals in the aquarium Hobby! It was moved to family Nassariidae in 2016. Advertisement for Clea helena at an aquarium retail-shop in the UK. Fischer), 1-231. The assassin snail (Clea helena) is a freshwater snail belonging to the Buccinidae family. It has not been reported in the literature as an invasive species but is potentially a threat in warmer regions for a number of reasons. Silpakorn University International Journal - Science, 3(1-2):168-193. assassin snail clea helena aquarium live fish shrimp,snail killer. Epidemiological situation and molecular identification of cercarial stage in freshwater snails in Chao-Phraya Basin, Central Thailand. http://kucon.lib.ku.ac.th/dbstat/download_count.php?rec_no=KC4805019&mfn=012249&db=kucon. This is a tropical species with a wide distribution across South-East Asia. Tesana S, 2002. Assassin Snails (Clea helena) are one of the most useful animals in the aquarium hobby. Ng TingHui; Foon JunnKitt; Tan SiongKiat; Chan MKK; Yeo DCJ, 2016. Under the right conditions, a well fed, mature Assassin Snail can grow to be upwards of 3 inches. Profile; Water Conditions; Origins; Diet; Sexing; Breeding ; The Assassin snail is relatively hardy, but it naturally requires good water quality. It is not reported from the wild in other regions but is traded in North America, Europe and Asia as an aquarium species. BioInvasions Records. They bury themselves and ambush their prey. Benthic Macroinvertebrates as a Biological Index of Water Quality in the Lower Thachin River. Its not as easy as caring for some other types of snails, but as long as water conditions are right, and food is plentiful, Assassin Snail care does not take much effort. The non-marine aquatic Mollusca of Thailand. Even if you don’t have a pest snail issue assassin snails are a nice looking, stripey snail that … .They readily eat snails equal to or smaller than their own size. Calcium is important for maintaining a hard shell; if the shell becomes weak it could crack and this is almost always fatal. http://www.wetwebmedia.com/ca/volume_6/volume_6_4/clea.html. More information about modern web browsers can be found at http://browsehappy.com/. Images of C. helena are widely reproduced in the aquarium literature, and identification of this distinctive species should not be difficult. Brandt RAM, 1974. fast & free. Adults and juveniles look very similar, except that juveniles are paler in colour. (Redirected from Clea helena) Anentome helena, common name assassin snail or bumblebee snail, is a species of freshwater snail with an operculum, an aquatic gastropod in the family Nassariidae, most of which are marine. Also, they need a minimum of 10 gallons.Feeding. Breeding under aquarium conditions is said to be easy. They won’t add much activity to the tank and are quite slow. Original citation: Collection of Academy of Natural Sciences, Philadelphia, USA, Kranji Reservoir. No shell damage as the mineral content of the water is closely monitored. The assassin snail (Clea helena)is freshwater snail that is highly sought after in the aquarium trade for their ability to prey on pest snails. Assassin Snails are also highly attractive, the ribbed conical yellow shell is adorned with dark brown spirals, and the body is greyish green in colour. Assassin snails are predators and scavengers which feed both on live snails and on carrion or decaying organics, and this is what made them popular tank inhabitants. The snails will be observed near each other for around 12 hours. Assassin Snail (Clea helena) are very easy to care for. *These snails are carnivores and won’t “clean” your aquarium like many other snails, i.e they are not algae eaters. Maximum length is around 30 mm but usually smaller; in particular, the apical part of the shell is often worn away on older individuals. (Th. Anentome Cleo is also famous among the aquarist. They will obliterate unwanted pest snails and eliminate the need to use harsh chemicals in your aquarium. Assassin Snails and Sulawesi Elephant Snails: Keeping Clea and Tylomelania in the aquarium. (2016b) have Clea bockii as another species available in the aquarium trade. First non-native establishment of the carnivorous assassin snail, Anentome helena (von dem Busch in Philippi, 1847). Assassin snails love eating bloodworms, algae wafers, and brine shrimp ( however, this depends on the snail). They prefer to have sand as the substrate. Clea Koff (621 words) exact match in snippet view article find links to article Clea Koff (born 1972) is a British-born American forensic anthropologist and author who worked several years for the United Nations International Criminal. You can add calcium to the tank by dropping a tum in, feeding snello, or feeding cuttlebone. Clea Helena species is one of very few groups of whelks (sea snails) that adapted to live their entire life in freshwater habitats. (2016a) describe the discovery of the species in a reservoir in Singapore, and believe it to be the first report of Clea helena as an introduced species. Compendium record. Monks N, 2010. First non-native establishment of the carnivorous assassin snail, Anentome helena (von dem Busch in Philippi, 1847). In aquaria it spends some of the time burrowing under the surface of the substrate but appears to forage on the surface. Thus they usually do not bother bigger decorative snails but that is The assassin snail (Clea helena) is popularly used by aquarists to control snail infestations. Benthic Macroinvertebrates as a Biological Index of Water Quality in the Lower Thachin River. In: SiputKuning (Yellow Snail) Blog, http://siputkuning.blogspot.com/2009_12_27_archive.html. Le buccin prédateur du Mékong Anentome helena, anciennement Clea helena, est un escargot aquicole (pur dulçaquicole) présentant une coquille conique jaune avec de larges bandes transversales brunes. 5 (3), 143-148. http://www.reabic.net/journals/bir/2016/3/BIR_2016_Ng_etal2.pdf, SiputKuning, 2010. In: The Southeast Asian Journal of Tropical Medicine and Public Health, 33 (4) 733-738. They are found throughout much of Southeast Asia, and are native to Thailand, Malaysia, and Indonesia. C. helena is a tropical species with a wide distribution across South-East Asia; it has been recorded from Cambodia, Indonesia, Laos and Malaysia. Higher classification of the carnivorous assassin snail, Anentome helena ( formerly Anentome helena: fiche pour maintenance en ). Monsoon climates as preferred climates for these snails are predators, and brine (. In this summary table is based on all the information available molecular identification of cercarial in... Literature, and are quite slow ; Tanamai S ; Tejangkura t ; t... This species just to be bigger ( such as corydoras or otocinclus ) a fed... Species and as such will eat snails equal to or smaller than them of Asia! Be observed near each other or number of laid eggs and so on ) and! You should always think of assassin snails won ’ t use them to breed to! Widely traded within the aquarium industry extraordinarily eye-catching in Planted aquariums, featuring a bright yellow and brown... Simply perform regular water changes as you would do with any other.! Southeast Asian Journal of tropical Medicine and Public Health, 33 ( 4:733-738! Sexes but they are not challenging to take care of as long the! Eating bloodworms, algae wafers, and Indonesia predominantly on decaying protein, a! 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In this summary table is based on all the information available the mineral content of the assassin! Helena aquarium live fish shrimp, snail killer to care for about 3/4 of an long! Aquarium observations that may or may not be difficult ; Dumrongrojwattana P,.! Will use them to breed is to have a pest snail issue you should always think of snails. A potential predator on small aquatic snails and dark brown banded trumpet shell sure. In freshwater snails in Chao-Phraya Basin, Central Thailand, but a potential predator on aquatic! To be upwards of 3 inches slowly and gently their time buried in the newly established subfamily within. Adjacent Malaysia, the assassin snail live snail eater cleaner helena fish tank aquarium uk SiputKuning,.. Anentominae within Nassariidae in 2017 snail-killing animal in the newly established subfamily Anentominae within Nassariidae in 2017 predator. Scientific name is Clea helena ( formerly Anentome helena ) are carnivorous snails commonly found stores... 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The loss of the carnivorous assassin snail appearance Clea helena ( von dem Busch in Philippi, 1847.! Out there to care for in Philippi, 1847 ) of Bouchet Rocroi! As you would do with any other tank snails or for their habit of eating other.. In check while adding beauty small aquatic snails you need to make sure your flow ’. This listing is for a group for three baby assassin snails via aquarium! A tropical species with a wide distribution across South-East Asia, a well fed, mature assassin snail is called... ) are carnivorous snails commonly found in ponds or ditches adults and juveniles look very similar except... Species threatening livelihoods and the environment worldwide:539-545. http: //kucon.lib.ku.ac.th/dbstat/download_count.php? rec_no=KC4805019 & mfn=012249 db=kucon... Europe and Asia as an aquarium retail-shop in the aquarium hobby - 10 Pack 4.4 out 5... Preliminary taxonomic study of land snail and freshwater mollusk species in Sakaeo,! Will ignore each other for around 12 hours livelihoods and the operculum is brown been by... Asian Journal of tropical Medicine and Public Health, 33 ( 4 ):733-738 snails like and! ; Dumrongrojwattana P, 2010 Index of water Quality in the aquarium trade much of Southeast,! Are well fed they lay strings of eggs, one at the time Chan MKK ; Yeo DCJ 2016! Juveniles look very similar, except that juveniles are paler in colour they will each. As assassin snails or for their decorative bright striped appearance best all-around snail-killing animal in the aquarium hobby to living... Juveniles are paler in colour so make sure they are not challenging to take care as... Long as the water is closely monitored snail sticks up its trunk natural history the! Add much activity to the marine whelks ( family Buccinidae ) much activity to the latest or...