Siamese algae-eater

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True Siamese algae-eater
Crossocheilus siamensis by Ark.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Cypriniformes
Family: Cyprinidae
Subfamily: Labeoninae
Genus: Crossocheilus
Species:
C. oblongus
Binomial name
Crossocheilus oblongus
Kuhl & van Hasselt, 1823
Synonyms
  • Labeo oblongus(Cuvier & Valenciennes, 1842)
  • Crossocheilus siamensis(Smith, 1931)
  • Epalzeorhynchos siamensisSmith, 1931
  • Epalzeorhynchos stigmaeusSmith, 1945
Siamese algae-eater in the aquarium Crossocheilus siamensis.jpg
Siamese algae-eater in the aquarium

The Siamese algae-eater (Crossocheilus oblongus) is a species of freshwater fish in the carp family, Cyprinidae. This bottom-dwelling tropical fish is found in mainland Southeast Asia, including the Chao Phraya and Mekong basins as well as the Malay Peninsula. Its natural habitats are streams and rivers as well as flooded forests during the rainy season. The Siamese algae-eater should not be confused with the flying fox (Epalzeorhynchos kalopterus) or the false siamensis (Garra cambodgiensis), lacking the distinctive black bands of the former.

Contents

Description

Illustration of true Siamese algae eater by Pieter Bleeker Crossocheilus oblongus Bleeker.jpg
Illustration of true Siamese algae eater by Pieter Bleeker

The Siamese algae-eater has a black horizontal stripe extending from nose to end of tail. The stripe can quickly fade to camouflage the fish against its surroundings, which is observed during fights or stress. [2] Genuine Crossocheilus siamensis, without maxillary barbels and with deeply fringed V-shaped upper lip [3] [4] are rarely encountered in the aquarium trade. [5]

Siamese algae-eaters can grow up to 15 centimetres (6 inches) within two years, and live for over 10 years in optimal conditions. [2] They are valued in the aquarium trade for being the only known fish species to consume red algae, including ‘black brush’ or ‘beard’ algae. [6]

Closely related is the red algae-eater Crossocheilus langei, a species that is widely sold as the Siamese algae-eater. It has a bright brownish elongate body with a slightly flat belly. It has a prominent brown-black horizontal stripe extending from nose to tail. This fish may grow to measure up to 16 centimetres (6.3 in). It possesses small maxillary barbels and an unfringed shallowly arcuate upper lip. [7] Two other similar species are traded as Siamese algae-eaters, namely Crossocheilus atrilimes, [8] a species that prefers Java moss to red algae, and an undescribed species of Crossocheilus. [5]

Two fish of the Crossocheilus genus resting on a rock Crossocheilus Oblongus.JPG
Two fish of the Crossocheilus genus resting on a rock

Aquarium care

A true Siamese algae eater interacting with a nerite snail in an aquarium Siamese algae-eater (Crossocheilus oblongus) searching for algae.jpg
A true Siamese algae eater interacting with a nerite snail in an aquarium

The hardy red algae-eater Crossocheilus langei is commonly found in the aquarium trade and is one of the most popular and effective tank algae cleaners. They are active and fast swimmers that will school together if kept in a group, but some individuals may display aggression to their own kind or related fish. In general, the red algae-eater can be kept in most community tanks and is reportedly much less aggressive than similar fish such as the Chinese algae-eater or the red-tailed black shark and the rainbow shark.[ citation needed ]

It prefers water temperature range of 24–26 °C (75–79 °F), a pH range of 6.5–8.0, and a water hardness of 5–20 dH. Because the red algae-eater is effective at controlling tank algae, many aquarists like to place them in heavily planted tanks with strong lighting to prevent the growth of algae. Unlike other aquarium algae eater fishes, the red algae-eater is valued for its ability to eat red algae (particularly Audouinella). The fish, however, is an opportunistic feeder and will eat pellets and most other food, a tendency that strengthens with age.[ citation needed ]

The lid of the tank should be properly closed leaving no large hole for the fish to jump out of the tank.

Since they cannot stay in mid water, they love driftwood/rocks and some plants that can support their weight to rest on. [9]

Siamese algae-eaters will often school together, but are also content living solo. When two are kept together, they will often establish their own territory as they mature. They can be a long living fish, with reports of lifespans up to ten years.[ citation needed ]

Related Research Articles

<span class="mw-page-title-main">Cyprinidae</span> Family of freshwater fish

Cyprinidae is a family of freshwater fish commonly called the carp or minnow family, including the carps, the true minnows, and their relatives the barbs and barbels, among others. Cyprinidae is the largest and most diverse fish family, and the largest vertebrate animal family overall, with about 3,000 species; only 1,270 of these remain extant, divided into about 200 valid genera. Cyprinids range from about 12 mm (0.5 in) in size to the 3 m (9.8 ft) giant barb. By genus and species count, the family makes up more than two-thirds of the ostariophysian order Cypriniformes. The family name is derived from the Greek word kyprînos.

<span class="mw-page-title-main">Tinfoil barb</span> Species of fish

The tinfoil barb is a tropical Southeast Asian freshwater fish of the family Cyprinidae. This species was originally described as Barbus schwanenfeldii by Pieter Bleeker in 1853, and has also been placed in the genera Barbodes and Puntius. The specific epithet is frequently misspelled schwanefeldii.

<span class="mw-page-title-main">Black ruby barb</span> Species of fish

The black ruby barb or purplehead barb is a tropical cyprinid fish endemic to Sri Lanka, where it occurs in forested streams from the Kelani basin to the Nilwala basin. They are found in streams on hills around 1000 ft in elevation. The brightly colored population introduced to Mahaweli at Ginigathena, Sri Lanka, is said to have diminished in number due to the aquarium export trade.

<span class="mw-page-title-main">Ramshorn snail</span> Common name for several species of snail

The term ramshorn snail or ram's horn snail is used in two different ways. In the aquarium trade it is used to describe various kinds of freshwater snails whose shells are planispiral, meaning that the shell is a flat coil. Such shells resemble a coil of rope, or a ram's horn. In a more general natural history context, the term "ramshorn snails" is used more precisely to mean those aquatic pulmonate gastropod mollusks in the family Planorbidae that have planispiral coiled shells.

<span class="mw-page-title-main">Red-tailed black shark</span> Species of fish

The red-tailed black shark, also known as the redtail shark and redtail sharkminnow, is a species of freshwater fish in the carp family, Cyprinidae. Despite its name, it is more closely related to carp. It is endemic to Thailand and currently critically endangered, but common in aquaria, where it is prized for its deep black body and vivid red or vivid orange tail. The red-tailed black sharks seen in the aquarium trade today are all captive bred.

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<span class="mw-page-title-main">Rainbow shark</span> Species of fish

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<span class="mw-page-title-main">Flying fox (fish)</span> Species of fish

The flying fox is a Southeast Asian species of freshwater fish in the family Cyprinidae. It is commonly kept in the aquarium trade. Among other foods, it is known to eat green algae. It is sometimes mistakenly referred to as the Siamese algae eater.

<i>Epalzeorhynchos</i> Genus of fishes

Epalzeorhynchos is a small ray-finned fish genus of the family Cyprinidae. Its members are – like some other cyprinids – known as "freshwater sharks" or simply "sharks". They are, however, freshwater members of the Osteichthyes lineage which is distinct from the Chondrichthyes lineage of sharks. The description of these animals as "shark" is most likely a reference to the shark-like shape of these popular cyprinids.

<span class="mw-page-title-main">Labeoninae</span> Subfamily of fishes

Labeoninae is a doubtfully distinct subfamily of ray-finned fishes in the family Cyprinidae of order Cypriniformes. They inhabit fresh water and the largest species richness is in the region around southern China, but there are also species elsewhere in Asia, and some members of Garra and Labeo are from Africa. They are a generally very apomorphic group, perhaps the most "advanced" of the Cyprinidae. A common name for these fishes is labeonins or labeoins.

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<span class="mw-page-title-main">Odessa barb</span> Species of fish

The Odessa barb is a species of cyprinid fish known from Central Myanmar, where it is known to occur in an artificial pond above the Anisakan Falls and also from the lower Chindwin River. For many years it has been known to the aquarium hobby, where it has frequently been confused with the less colourful ticto barb, but it was only described scientifically in 2008.

<i>Gyrinocheilus aymonieri</i> Species of fish

Gyrinocheilus aymonieri is a freshwater fish native to large parts of Southeast Asia. It is of interest as a local food source and for the aquarium trade. Its common names include honey sucker, sucking loach and Chinese algae eater.

<i>Crossocheilus</i> Genus of fishes

Crossocheilus, also known as the fringe barbs, flying foxes, or "algae eaters", is a genus of fish in the family Cyprinidae. It is distributed in China, India, Indonesia, Malaysia and Thailand in Asia. These fish occur in several types of habitat, often fast-flowing rivers with rocky bottoms.

<i>Gyrinocheilus</i> Genus of fishes

Gyrinocheilus is the single genus in the family Gyrinocheilidae, a family of small Southeast Asian cypriniform fishes that live in fast-flowing freshwater mountain streams. The species in this genus are commonly called algae eaters. They hold on to fixed objects using a sucker-like mouth, and, despite the name, feed on a wide range of detritus, rather than simply on algae. A "golden" variety of G. aymonieri, the Chinese algae eater or "sucking loach", can be found in many pet shops and fish farms.

<i>Crossocheilus atrilimes</i> Species of fish

Crossocheilus atrilimes is a species of freshwater fish in the family Cyprinidae. It is found in Laos, in Thailand, and in Cambodia.

<i>Crossocheilus langei</i> Species of fish

Crossocheilus langei, also known as the red algae eater, is a species of ray-finned fish in the genus Crossocheilus. It is native to Malaysia and Sumatra. This bottom-dwelling tropical fish is found in mainland Southeast Asia. Its natural habitats are streams and rivers as well as flooded forests during the rainy season. It is often confused with the Crossocheilus oblongus, however, both are algae eaters and will behave similarly.

References

  1. Vidthayanon, C. (2012). "Crossocheilus oblongus". The IUCN Red List of Threatened Species: 2012: e.T181162A1705340. doi: 10.2305/IUCN.UK.2012-1.RLTS.T181162A1705340.en .
  2. 1 2 "Algae Eating Cyprinids". www.thekrib.com. Retrieved 2022-08-26.
  3. Smith, H. M. (1931). "(article)". Proceedings of the United States National Museum. 79 (2873): 20. doi:10.5479/si.00963801.79-2873.1.
  4. Smith, H. M. (1945). "The Fresh-Water Fishes Of Siam, Or Thailand" (PDF). Bulletin of the United States National Museum (188): 265. doi:10.5479/si.03629236.188.1.
  5. 1 2 Niederle, J. (2007). "(article)". Akvárium Terárium. 50 (9–10): 18–23.
  6. "Article: Algae Eaters for Turtle Tanks". www.austinsturtlepage.com. Retrieved 2022-08-26.
  7. Bleeker, P. (1860). "(article)". Acta Soc. Sci. Indo-Neerl. 7: 127.
  8. Kottelat, M. (2000). "(article)". Journal of South Asian Natural History. 5 (1): 39.
  9. "Siamese Algae Eater (Crossocheilus Siamensis): Fish Profile, Care & Diet | The Aquarium Club". theaquarium.club. Retrieved 2018-04-07.