Fish and aquatic news » New species http://www.aquaticcommunity.com/news The latest news from below the surface Wed, 23 Oct 2013 11:30:17 +0000 en-US hourly 1 http://wordpress.org/?v=3.6.1 New Arapaima species -Arapaima leptosoma – Slender Arapaima http://www.aquaticcommunity.com/news/lib/1478 http://www.aquaticcommunity.com/news/lib/1478#comments Wed, 23 Oct 2013 11:25:48 +0000 William http://www.aquaticcommunity.com/news/?p=1478 A new species of arapaima, Arapaima leptosoma, has been described by Dr. Donald Stewart of the SUNY College of Environmental Science and Forestry (ESF) at Syracuse University. The new species has been described from specimen that were collected in 2001 near the confluence of the Solimões and Purus rivers in Amazonas State, Brazil. Stewarts discovery brings the total number of […]

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arapaima leptosoma New Arapaima species  Arapaima leptosoma   Slender ArapaimaA new species of arapaima, Arapaima leptosoma, has been described by Dr. Donald Stewart of the SUNY College of Environmental Science and Forestry (ESF) at Syracuse University. The new species has been described from specimen that were collected in 2001 near the confluence of the Solimões and Purus rivers in Amazonas State, Brazil. Stewarts discovery brings the total number of Arapaima species up to five .

donald stewart New Arapaima species  Arapaima leptosoma   Slender Arapaima

Dr Donald Stewart with two A. leptosoma

Four species of Arapaima were recognized in the mid-1800s, but in 1868, Albert Günther, a scientist at the British Museum of Natural History, published that those were all one species, Arapaima gigas. Over time, Günther’s view became the prevailing wisdom. Stewart did however look into these four species and it turns out that all four species are distinct different species.

Stewart believes that their might be more species of Arapaima out there. The fish is an appreciated food fish and has become increasingly rare. This combined with the fish large size means that there are few reference specimens out there which makes it easy to overlook a species or two. Stewart made his discovery when he examined preserved arapaima at the Instituto Nacional de Pesquisas da Amazônia in Manaus, Brazil.

The new species differ from the other species in several ways including the shape of sensory cavities on the head, a sheath that covers part of the dorsal fin and a distinctive color pattern. Its scientific name, A. leptosoma, is in reference to its slender body.

The Arapaima is becoming a more and more important species in aquaculture and this makes it very important to identify all different species and there natural range. If not, different species might be spread to new areas through aquaculture. Once in a new area fish might escape and what is an endangered species in one area might become an invasive species in another. Threatening the local Arapaima species in the area.

The wild populations of Arapaima is very low in many areas as a result of overfishing. Overfishing of Arapaima has been a problem for almost a century and conservation efforts as well as aquaculture of the fish is likely necessary to save these once common species. The conservation effort will however not be as effective as we might want it to be until all species has been identified.

The new species is most likely already cultured and exported into the aquarium trade but under the name Arapaima gigas. It can be mentioned that the new species already is on display in Europe in the Sevastopol Aquarium, Ukraine. The species has been on display there for a long time as A. gigas but is according to Stewart in fact Arapaima leptosoma.

arapaima leptosoma1 New Arapaima species  Arapaima leptosoma   Slender Arapaima

arapaima leptosoma

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Gold Nugget pleco and Mango pleco finally described by science http://www.aquaticcommunity.com/news/lib/1461 http://www.aquaticcommunity.com/news/lib/1461#comments Sat, 30 Jul 2011 16:10:34 +0000 Anja http://www.aquaticcommunity.com/news/?p=1461 Two pleco species from the Xingu River drainage that are popular within the aquarium hobby have finally been scientifically described and given scientific names. The fish known to aquarists as Gold Nugget pleco (L18, L85, L177) is from now on officially named Baryancistrus xanthellus, while the pleco called Mango pleco (L47) has been given the scientific name Baryancistrus chrysolomus. The […]

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Two pleco species from the Xingu River drainage that are popular within the aquarium hobby have finally been scientifically described and given scientific names.

The fish known to aquarists as Gold Nugget pleco (L18, L85, L177) is from now on officially named Baryancistrus xanthellus, while the pleco called Mango pleco (L47) has been given the scientific name Baryancistrus chrysolomus.

The species were described and named by Lúcia Py-Daniel, Jansen Zuanon and Renildo de Oliveira in a paper published in the most recent issue of the journal Neotropical Ichthyology (http://www.scielo.br/scielo.php?pid=1679-6225&script=sci_serial).

Golden nugget pleco Gold Nugget pleco and Mango pleco finally described by science

Baryancistrus xanthellus (Golden Nugget pleco)

This is the pleco known to most aquarists as the Golden Nugget pleco, and it has been given three different L-numbers (L18, L85 and L177).

Baryancistrus xanthellus differs from other members of its genus by having a broad light band on the edges of the dorsal and caudal fin in juveniles, a band that turns into a small dot on the tips of these fins as the fish matures into an adult.

The body of Baryancistrus xanthellus is covered in pale spots. You can separate it from B. beggini by looking in its mouth; Baryancistrus xanthellus have more teeth in both the upper and lower jaw than B. beggini.

The authors found congregations of Baryancistrus xanthellus under flat rocks at the bottom in shallow parts of the Xingu River drainage where the water moved rapidly. They analyzed the stomach material and found out that it was chiefly algae.

Baryancistrus chrysolomus (Mango pleco)

This fish is known in the aquarium trade as Mango pleco and has the L-number L47. The scientific name, Baryancistrus chrysolomus, alludes to its yellow fin margins (chrysos and loma are the Greek words for yellow and border, respectively).

Just like B. xanthellus, Baryancistrus chrysolomus sports a broad orange to yellow band along the entire outer margin of the dorsal and caudal fins. This feature distinguishes B. xanthellus and B. chrysolomus from all other described members of the genus Baryancistrus.

To separate Baryancistrus chrysolomus from B. xanthellus, look for spots on the body. If there are no clear spots on the body, it is not a B. xanthellus.

The scientists encountered Baryancistrus chrysolomus under rocks at the bottom of the river in stretches where the water flow was slow to moderate. The fish fed by scraping algae from the rocks.

For more information on these two newly described species of pleco, see the paper: Py-Daniel, LR, J Zuanon and RR de Oliveira (2011) Two new ornamental loricariid catfishes of Baryancistrus from rio Xingu drainage (Siluriformes: Hypostominae). Neotropical Ichthyology 9, pp. 241–252.

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New species of Brazilian killifish described by science http://www.aquaticcommunity.com/news/lib/1448 http://www.aquaticcommunity.com/news/lib/1448#comments Wed, 13 Jul 2011 00:42:36 +0000 Anja http://www.aquaticcommunity.com/news/?p=1448 A new species of killifish native to Brazil has been formally described and given a scientific name. The fish, from now on known as Rivulus albae, belongs to the subgenus Melanorivulus and was found in soft and acidic water in northeastern Brazil.

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A new species of killifish native to Brazil has been formally described and given a scientific name. The fish, from now on known as Rivulus albae, belongs to the subgenus Melanorivulus and was found in soft and acidic water in northeastern Brazil.

rivulus albae New species of Brazilian killifish described by science

Rivulus albae. Photo By Javier Rabanal

The fish is named after Alba Garcia, the daughter of José Ramón García, one of the authors of the paper in which the species is described.

Appearance

Rivulus albae distinguishes itself from the other members of the subgenus Melanorivulus by having brown oblique bars on the entire flank which on the dorsal portion of the flank often form chevron-like marks with a posterior vertex (vs. chevron-like pattern with vertex pointing anteriorly when present).

Rivulus albae looks quite similar to Rivulus decoratus, but has 6 branchiostegal rays instead of 5, 13 anal fin rays instead of 10 or 11, and 24-26 scales on lateral series instead of 25-28.

Distribution and habitat

All the other recognized species of the subgenus Melanorivulus live in rivers south of the main channel of the Amazon River, but Rivulus albae was collected north of the Amazon River, in the state of Amapá. So far, the species is only known from a handful of localities belonging to Comprido Lake and Tartaruga Grande River.

Rivulus albae was collected in an environment where the savannah meets the forest, close to the banks of large water bodies with clear water at an altitude up to roughly 50 meters above sea level. This fish lives in lakes and lagoons where the underwater vegetation is dense and the water soft and acidic (pH 6.0-6.5).

Authors

  • STEFANO VALDESALICI, ITALYvaldesalici.stefano(at)gmail.com
  • JOSÉ RAMÓN GARCÍA GIL, SPAIN
  • DALTON TAVARES BRESSANE NIELSEN, BRAZIL

The paper was published in Vertebrate Zoology on June 22, 2011.

http://www.vertebrate-zoology.de/vz61-1/06_Vertebrate_Zoology_61-1_Valdesalici.pdf

http://www.vertebrate-zoology.de/

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African Wolf – New wolf Species discovered http://www.aquaticcommunity.com/news/lib/1400 http://www.aquaticcommunity.com/news/lib/1400#comments Sat, 12 Feb 2011 18:48:42 +0000 Anja http://www.aquaticcommunity.com/news/?p=1400 This is not really fish related but cool enough to warrant a post here anyway. Scientists have discovered a new species of Wolf in Egypt.

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African wolf African Wolf   New wolf Species discovered

African Wolf aka Egyptian Jackal

This is not really fish related but cool enough to warrant a post here anyway. Scientists have discovered a new species of Wolf in Egypt. A team a researchers from Oxford University’s Wildlife Conservation Research Unit (WildCRU), the University of Oslo, and Addis Ababa University, with funding from the University of Oslo, shows that Gray wolves reached Africa around 3 million years ago before spreading throughout the northern hemisphere. The new wolf is a relative of the Holarctic grey wolf, the Indian wolf and the Himalayan wolf.

The Egyptian jackal (Canis aureus lupaster) is an importan part of the Egyptian mythology and has until now been considered a subspecies of the Golden jackal (Canis aureus) but this new research show that the egyptian jackal is infact a species of wolf. This new species is not closely related to the rare Ethiopian wolves. Ethiopian wolves are a relatively recent of spring from the gray wolf complex while this new species, ”African wolf” (suggested name by Professor Sillero), likely arrived in Africa much earlier.

Professor David Macdonald says: “A wolf in Africa is not only important conservation news, but raises fascinating biological questions about how the new African wolf evolved and lived alongside not only the real golden jackals but also the vanishingly rare Ethiopian wolf, which is a very different species with which the new discovery should not be confused.”

Sa393 300x246 African Wolf   New wolf Species discovered

The jackal is important in Egyptian Mythology

The team also found genetically very similar specimens to this new wolf in the highlands of Ethiopia, 2,500 km from Egypt, suggesting that the new species might have a large distrobution and that it is not just found in Egypt.

The conservational status of this new species is not known.

Professor Sillero says: “It seems as if the Egyptian jackal is urgently set for a name-change, and its unique status as the only member of the grey wolf complex in Africa suggests that it should be re-named ‘the African wolf’.”

WildCRU is part of Oxford University’s Department of Zoology.

If you want to read the entire paper (direct link) you can do so at PlosOne:

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New species of giant U.S. crayfish described http://www.aquaticcommunity.com/news/lib/1381 http://www.aquaticcommunity.com/news/lib/1381#comments Wed, 26 Jan 2011 02:07:38 +0000 Anja http://www.aquaticcommunity.com/news/?p=1381 A species of giant crayfish native to Tennessee in the United States has been scientifically described and given the name Barbicambarus simmonis.

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Giant New Crayfish New species of giant U.S. crayfish described

Photo by: L. Brian Stauffer.

‘A species of giant crayfish native to Tennessee in the United States has been scientifically described and given the name Barbicambarus simmonis.

Barbicambarus simmonis can reach a size of at least 5 inches (12,5 cm) which is twice the size of an average North American crayfish.

The researchers behind the paper in which Barbicambarus simmonis was described are Christopher Taylor from University of Illinois at Champaign-Urbana and Guenter Schuster from Eastern Kentucky University.

The first specimen was found by Tennessee Valley Authority scientist Jeffrey Simmons in 2010, and that is why the species bears his name. This specimen, as well as the specimen encountered by Taylor and Schuster, lived in Shoal Creek, a stream in southern Tennessee that ultimately drains into the Tennessee River. The creek has attracted the attention of researchers for at least half a century, which makes it reasonable to assume that Barbicambarus simmonis is either rare or very difficult to find.

You can find out more about Barbicambarus simmonis in the paper “Monotypic no more, a description of a new crayfish of the genus Barbicambarus Hobbs, 1969 (Decapoda: Cambaridae) from the Tennessee River drainage using morphology and molecules”  published in the journal Proceedings of the Biological Society of Washington.

barbicambarus simmonsi New species of giant U.S. crayfish described

Barbicambarus simmonsi

Barbicambarus is a genus of freshwater crayfish that up until now had only one member: Barbicambarus cornutus. Barbicambarus cornutus is known only from the Barren River and Green River systems of Tennessee. The largest known specimens are 23 cm (9 inches) long, so this crayfish is even larger than Barbicambarus simmonis and one of the largest species of crayfish in North America*. It was scientifically described in 1884, but not seen again by scientists until the 1960s.

North America is rich in crayfish and also a comparatively well explored part of the world. Of the roughly 600 scientifically described species of crayfish, roughly 50% are native to North America. However, even though North America is such a well surveyed part of the world, new species are regularly described by scientists. The Pearl Map Turtle, Graptemys pearlensis, was for instance described in the summer of 2010. Just like Barbicambarus simmonis, this turtle is native to the southern part of the U.S. It lives in the Pearl River in Louisiana and Mississippi.

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New Kind Of Large Squid Making Waves http://www.aquaticcommunity.com/news/lib/1291 http://www.aquaticcommunity.com/news/lib/1291#comments Wed, 17 Nov 2010 22:38:58 +0000 Anja http://www.aquaticcommunity.com/news/?p=1291 A brand new kind of large squid has been found by researchers while voyaging around on a research cruise in the southern part of the Indian Ocean.

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A brand new kind of large squid has been found by researchers while voyaging around on a research cruise in the southern part of the Indian Ocean.

This large squid, almost a meter long, belongs to the chiroteuthid family.

The squid which form a part of this family are long and thin, and have organs which produce light. The light producing organs help them attract their meals.

This large squid was discovered during an analysis of thousands of different samples which were brought in from the Seamounts cruise last year. The cruise is being led by a conservation group known as IUCN.

The project began a year ago when experts in the area of marine biology set out on a six week science expedition in the Indian Ocean.

The aim of the expedition was to shed some light on the mysterious seamounts – mountains under the water – located in the southern part of the Indian Ocean, and to help manage marine resources and improve conservation plans in the area.

“For 10 days now 21 scientists armed with microscopes have been working through intimidating rows of jars containing fishes, squids, zooplankton and other interesting creatures,” explains a spokesperson of the Department of Zoology at the University of Oxford, Alex Rogers.

“Many specimens look similar to each other and we have to use elaborate morphological features such as muscle orientation and gut length to differentiate between them.”

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New Kind Of Fish Discovered http://www.aquaticcommunity.com/news/lib/1207 http://www.aquaticcommunity.com/news/lib/1207#comments Sat, 16 Oct 2010 15:04:23 +0000 Anja http://www.aquaticcommunity.com/news/?p=1207 A brand new kind of fish has just been found in one of the dark “lifeless” areas of the ocean. It was previously thought that the area was devoid of fish, researchers say.

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whitesnailfish 300x168 New Kind Of Fish Discovered

White Snailfish

A brand new kind of fish has just been found in one of the dark “lifeless” areas of the ocean. It was previously thought that the area was devoid of fish, researchers say.

This new kind of snailfish was discovered making its home at an amazing depth of 7 kilometers, in the Peru-Chile trench in the South East Pacific.

Large groups of cusk-eels and rather large scavengers were also found making themselves at home at these depths, which is a scientific first, researchers added.

The discoveries, in some of the deepest darkest recesses of our planet, were made by a group of marine biologists hailing from the University of Aberdeen, in conjunction with experts from Japan and New Zealand.

The team set out on a 21 day voyage, during which they made use of various deep-sea imaging equipment to snap photos of the murky depths, some 4500 meters to an astounding 8 kilometers within the trench.

This voyage was the seventh such voyage as part of HADEEP, a research project cooked up by the boys over at the University of Aberdeen’s Ocean Lab and the University of Tokyo’s Ocean Research Institute, along with the backing of New Zealand’s National institute of Water and Atmospheric Research.

The use of the updated technology really gave researchers the boost they needed to discover this amazing find. Who knows what will be dredged up next? Science has been stale for such a long time, especially when you talk about the oceans, so it’s good to see some new discoveries being made right under our noses.

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Melanotaenia fasinensis – New Rainbow Fish Named From West Papua http://www.aquaticcommunity.com/news/lib/1121 http://www.aquaticcommunity.com/news/lib/1121#comments Sun, 26 Sep 2010 01:44:37 +0000 Anja http://www.aquaticcommunity.com/news/?p=1121 Researchers have just discovered and described a new rainbow fish which hails from West Papua, Indonesia.

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BirdsHeadPeninsula Melanotaenia fasinensis   New Rainbow Fish Named From West Papua

Melanotaenia fasinensis location

Researchers have just discovered and described a new rainbow fish which hails from West Papua, Indonesia.

Ichthyologists, also known as fish scientists to us normal folk, Paradis, Pouyaud, Kadarusman and Sudarto are credited with the find and have dubbed the new kind of rainbow fish Melanotaenia fasinensis. They published this in a paper in the journal Cybium.

The new rainbow fish was found in the Fasin River, just about 25 clicks west of Lake Ayamaru on the West Papua’s Bird’s Head Peninsula.

The little guy was found floating about in a 1 meter deep, 4.5 meter wide stream, surrounded by flush greenery.

This rainbow fish lives over a substrate of gravel, and makes its home amongst limestone boulders and debris of fallen branches from the forest.

The Fasin River also boasts a myriad of other species such as sleeper gobies, and different types of crayfish.

The Bird’s Head Peninsula in Indonesia is considered a hotspot when one is going about and trying to find rainbow fish. There are many different kinds of rainbow fish which also call the place home, and they all seem to live in harmony with one another.

It’s good to see that the scientific world has not given up on seeking new kinds of this beautiful fish. Not only are they pretty to look at, but they are key to the survival of all the species in that ecosystem.

Some people have been trying to catch them and sell them off as pets, however an ordinance is in place telling people to refrain from such a practice.

Melanotaenia fasinensis1 Melanotaenia fasinensis   New Rainbow Fish Named From West Papua

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Breaking News: New Snail Larval Form discovered: First since 1978! http://www.aquaticcommunity.com/news/lib/1072 http://www.aquaticcommunity.com/news/lib/1072#comments Sat, 11 Sep 2010 05:57:47 +0000 Anja http://www.aquaticcommunity.com/news/?p=1072 Now, just when you thought you pretty much knew your basic zoology, an amazing new discovery has been made that is basically going to force some poor guy to rewrite the molluscan, larval ecology and invertebrate text books.

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thermal vent Breaking News: New Snail Larval Form discovered: First since 1978!

Thermal Vent

Well, just when you are comfortable knowing that what you know is accurate, the world comes along and throws you another curve ball. We used to know there were 9 planets, now there are 8, we used to know the earth was the center of the solar system, now we know better.. Now, just when you thought you pretty much knew your basic zoology, an amazing new discovery has been made that is basically going to force some poor guy to rewrite the molluscan, larval ecology and invertebrate text books.

Between the 1850′s and the 1870′s supposedly all known forms of snail were discovered. However, thanks to modern technology, and some persistent researchers, we now know that we were mistaken, and that the forms of snail are really much more diverse than originally thought.

This new snail larval form is really turning heads, and here’s why. This larval form discovered is the first of its kind to be found to be a free-swimming pre-veliger larva. This is rather interesting because normally they don’t swim freely. Not only that but it appears these new little guys can actually turn hydrogen sulfide, and methane as an energy source.. Imagine, a snail which subsists on farts…

Credited with this astounding discovery are Anders Waren, a Swedish Naturalist from the Royal Museum of Natural History in Stockholm, and collegue Philippe Bouchet.

They have been working on this project since the 1980s, and have finally made their marks on history. These are a pair to watch folks, who knows what they might discover next?

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New Species of Filament Barb Named After Ichthyologist http://www.aquaticcommunity.com/news/lib/1037 http://www.aquaticcommunity.com/news/lib/1037#comments Tue, 07 Sep 2010 06:20:17 +0000 Anja http://www.aquaticcommunity.com/news/?p=1037 A brand new kind of filament barb has been discovered and described which is from India's southern tip. This new discovery was released in the newest edition of the Journal of Threatened Taxa. This is really quite an astonishing discovery, and it leads one to wonder what other marvels may be hiding themselves away in the depths of the sea, far from the prying hands of us humans.

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A brand new kind of filament barb has been discovered and described which is from India’s southern tip. This new discovery was released in the newest edition of the Journal of Threatened Taxa. This is really quite an astonishing discovery, and it leads one to wonder what other marvels may be hiding themselves away in the depths of the sea, far from the prying hands of us humans.

puntius rohani New Species of Filament Barb Named After Ichthyologist

Puntius Rohani - Picture from report

Authors, TJ Indra, K Rema, and JD Marcus Knight have dubbed the new barb discovered Puntius rohani, after Rohan Pethiyagoda, an accomplished Ichthyologist, for his contributions on both Sri Lankan and Indian fish.

This new filament barb is distinguished by others of its species by the fact that this particular barb has a black club-shaped blotch by the caudal peduncle. It also seems to lack any other colors or patterns other than this blotch, and it also doesn’t have the black bands near the tip of its caudal fin lobes.

The actual report is really quite riveting, and tells a great deal more about the new filament barb, other differences, discovery, and notations.

If you would like to hear more on this subject, you will need to refer to the paper itself: Devi, KR, TJ Indra and JDM Knight (2010) Puntius rohani (Teleostei: Cyprinidae), a new species of barb in the Puntius filamentosus group from the southern Western Ghats of India. Journal of Threatened Taxa 2(9): 1121-1129. Read the papper (pdf)

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