A new subfamily has been created within the catfish family Loricariidae, the largest family of catfish and currently home to over 700 described species. The new subfamily has been named Otothyrinae and its members include the genera Corumbataia, Epactionotus, Eurycheilichthys, Hisonotus, Microlepidogaster, Otothyris, Otothyropsis, Parotocinclus, Pseudotothyris, and Schizolecis.

The new subfamily was named in a study published in the latest issue of the journal Molecular Phylogenetics and Evolution[1]. Juan Montoya-Burgos, Márcio Chiachio and Claudio Oliveira – the researchers behind the article – have studied the molecular phylogeny of the subfamilies Hypoptopomatinae and Neoplecostominae in the family Loricariidae. They decided to name a new subfamily after taking a closer look at the phylogeny of the fish using a partial sequence of the nuclear F-reticulon4 gene.

In addition to the nuclear F-reticulon4 gene, Burgos, Chiachio and Oliviera used morphological evidence to decide which catfish species that should be placed in the new subfamily, and the study has also examined the historical biogeography of the group.

New species of catfish from the Ngounié River

Belgian and French scientist[1] have now described and named an African catfish sporting a striking pattern of irregular whitish lines and dots over a black background. The fish has been given the name Synodontis ngouniensis after its type locality, the Ngounié River drainage. The Ngounie River is the last and second most important tributary of the famous Ogowe River and flows through the country Gabon in west central Africa. The species can also be found in the Nyanga River drainage in Congo. (Nyanga is a smaller coastal river that runs through southern Gabon and northern Congo.)

The researchers collected Synodontis ngouniensis from a turbid part of the Ngounié River, where the temperature was 24°C (roughly 75°F) and the pH-value 8.4 (very alkaline).

Synodontis ngouniensis is a mochokid catfish. Its dorsal spine has a smooth anterior margin except for 1-4 feeble serrations that can be seen on the distal part. The species also has a maxillary barbel with a smooth membrane which is proximally at least as broad as the barbel thread and located on the posterior basal two third of the barbel. The fish is equipped with 12-19 mandibular teeth, 10-13 gill rakers on the ceratobranchial of the first branchial arch, and a triangular humeral process.

If you want to learn more, you can find the description of the fish in Ichthyological Exploration of Freshwaters 19[2].

New species of catfish from the Woleu River

This new species of mochokid catfish has long been confused with another similar species, Synodontis batesii, but has now been recognized as a species in its own right thanks to the work of researchers John Friel and John Sullivan. The new species has been given the name Synodontis woleuensis after the river Woleu and has is known to be present in the Woleu/Mbini/Uoro and Ntem basins of Gabon and Equatorial Guinea in west central Africa.

Synodontis woleuensis sports a dark background colour decorated with numerous small light spots of irregular shapes. A pair of light spots can be seen anterior and posterior to the adipose fin, and a narrow depigmented curved band runs along the anterior margin of the caudal fin. Another notable feature is the serrations on the anterior edge of the dorsal spine of the fish. 

If you wish to learn more about this new species, you can find the description in the latest issue of Proceedings of the Academy of Natural Sciences of Philadelphia[3].

Born in the Netherlands in 1947, Marc van Roosmalen is a Brazilian primatologist of Dutch birth living in Manaus, Brazil. After studying biology at the University of Amsterdam he did four years of doctoral fieldwork in Suriname studying the Red-faced Spider Monkey. Since then, van Roosmalen has devoted his life to the scientific exploration of the South American flora and fauna.

Marc van Roosmalen is described as a hand-on naturalist and has spent long periods of time doing research work in the Amazonian rainforest, while simultaneously producing prolific amounts of scientific papers, books, reviews, and wildlife documentaries. His work has led to the discovery and description of several new species, such as Callibella humilis, the dwarf marmoset, the second smallest monkey in the world, and Lecythis oldemani, a tree belonging to the Brazil Nut family. From 1986 to 2003, van Roosmalen served as senior scientist at the National Institute for Amazonian Research (INPA) under the Brazilian Ministry of Science and Technology.

Parallel to his research work, van Roosmalen is a dedicated conservationalist trying to protect the Brazilian rainforest from destruction by humans. During the late 1980s, he launched “The Center for the Rehabilitation and Re-introduction of Endangered Wildlife” in the federal Rio Cuieiras Nature Reserve; a centre where all kinds of animals, but especially monkeys confiscated from the illegal pet trade, were rehabilitated in the local rain forest. In 1999, he founded the NGO “Amazon Association for the Preservation of High Biodiversity Areas” (AAPA) and began purchasing areas of pristine rainforest in regions harboring extremely high biodiversity and/or animals and plants new to science.

For his outstanding work in South America, van Roosmalen has received several honors and was knighted as Officer in the Order of the Golden Ark by Prince Bernhard of the Netherlands in 1997. At the turn of the millennium, van Roosmalen was selected as one of the worldwide recognized “Heroes for the Planet” by Time Magazine.

You can read about van Roosmalen’s current predicament in our interview with him which is found here. More information can also be found in this Wired article and this article published by the Smithsonian institution.

“For if there are out there big tree-dwelling, ground-dwelling and even aquatic mammals not known to science – a dwarf tapir, a giant peccary, a white deer, a dwarf manatee, another river dolphin, to name a few – what do we really know about its flora and fauna? Very Little. About its ecology – the utterly complex web of relationships between plants and animals? Even less. Then what do we know about the sustainability of this ecosystem? Absolutely nothing.”

– Marc van Roosmalen

Hundreds of new animal species have been discovered by marine researchers studying Australian reefs as a part of the Census of Marine Life, an international effort to catalogue all life in the oceans. The findings include such curious creatures as tongue-eating isopod parasites living on fish and several new species of tanaid crustaceans, some with claws longer than their bodies. The team also found about 150 species of soft coral thought to be new to science, scores of tiny amphipod crustaceans of which an estimated 40 to 60% will be formally described for the first time, and dozens of small crustaceans likewise believed to be unknown to the scientific community. Researchers actually suspect that one or even several new families of species are to be found among the sampled crustaceans.

The investigated locales are the Lizard and Heron Islands (part of the Great Barrier Reef), plus the Ningaloo Reef off north-western Australia. All locations are considered well known and popular among scuba divers, and the research team was therefore quite surprised when they stumbled upon such a prolific collection of species unknown to science. This shows how little we still know about the species that inhabit our planet; even the ones living in habitats frequented by hundreds or even thousands of people each year.

Map of locations

“People have been working at these places for a long time and still there are literally hundreds and hundreds of new species that no one has ever collected or described,” says Julian Caley, a scientist from the Australian Institute of Marine Science who is helping to lead the research. “We were all surprised and excited to find such a large variety of marine life never before described – most notably soft coral, isopods, tanaid crustaceans and worms – and in waters that divers access easily and regularly. Compared to what we don’t know, our knowledge of marine life is a proverbial drop in the ocean. Inventorying the vast diversity and abundance of life across all ocean realms challenges both science and the imagination.”

In order to aid future explorations, researchers left several “houses” – formally known as Autonomous Reef Monitoring Structures (ARMS) – for marine creatures to colonize on the ocean floor. The houses consist of layered plastic structures and have been designed to appeal to a variety of sea life. Over the next one to three years, the houses will be collected and their tenants investigated.

See pictures of some of the creatures here

The Census of Marine Life (www.coml.org) is a global network of researchers in more than 80 nations engaged in a 10-year initiative to assess and explain the diversity, distribution, and abundance of marine life in the oceans – past, present, and future. The network will release the first Census of Marine Life in 2010.

Australian scientists have now completed an 18-month long project aimed at scientifically describing sharks and rays, using traditional techniques as well as modern DNA sequence analysis. The ambitious project has resulted in over 100 species of sharks and rays being properly classified, which is equal to about one third of Australia’s known sharks and rays.

Southern Dogfish Image credit – CSIRO

Over 90 of the new species had already been identified by Dr Last and Dr Stevens in their book “Sharks and Rays of Australia” from 1994, but remained undescribed and without scientific names.

Many of the new species are endangered in the wild, such as the Maugean Skate and the Southern Dogfish, and having them properly classified and named is important for future monitoring and conservational work. The new descriptions and names will be included in a revised edition of “Sharks and Rays of Australia” which is planned for release in 2009.

Maugean Skate Image credit – CSIRO

The 18-month long study was backed by CSIRO’s Wealth from Oceans National Research Flagship. National Research Flagships are large-scale multidisciplinary research partnerships and the National Research Flagships program is one of the biggest scientific research endeavours ever undertaken in Australia.

If you’re interested in the Wealth from Oceans Flagship, you can find more information here. http://www.csiro.au/org/WealthOceansFlagship.html

Two new species of fish has been scientifically described and named: Glyptothorax filicatus and Glyptothorax strabonis. The genus Glyptothorax is a part of the family Sisoridae in the catfish order Siluriformes, and the most species-rich and widely distributed genus of the entire family.

The new species both hail from Vietnam and were described by Heok Hee Ng[1] and Jörg Freyhof[2]. Glyptothorax species typically live in fast flowing hillstreams or faster-flowing stretches of larger rivers, and the two new species are no exceptions – they have both been described from the rivers draining the Annam Cordilleras in central Vietnam.

Glyptothorax filicatus can be distinguished from its close relatives in Indochina on the diverging pattern of striae that runs along the edges of the central depression in the thoracic adhesive apparatus, while Glyptothorax strabonis is recognized on its very small eyes.

As an adaptation to a life in fast moving waters, members of the Glyptothorax all have an adhesive apparatus on the body, commonly known as a “sucker”. An adhesive apparatus comes in handy when you live in fast flowing waters since it makes it possible to “suck” yourself to a surface, e.g. a rock, and avoid being swept away by the current. Members of the genus Glyptothorax are equipped with an adhesive apparatus on the thorax with grooves parallel or oblique to the longitudinal axis of the body. This separates them from the other genera in the family since those fishes have no thoracic adhesive apparatus at all or a thoracic adhesive apparatus with grooves that runs transverse to the longitudinal axis of body.

A new species of giant clam has been encountered by researchers in the Red Sea and given the name Tridacna costata. The new species is fairly similar to two other well-known species of Red Sea clams and it was therefore first suspect to be a hybrid, but genetic analysis has now deemed it a separate species. Further research carried out in the Red Sea also supports this; there are significant differences in behaviour between the two other species and the newly discovered clam. The two previously known clams spawn during a long period in summer while the new clam spawns during a short period in spring.

Fossil evidence uncovered by researchers has now unveiled something even more interesting; Tridacna costata might be one of the earliest examples of marine overexploitation by humans. Fossil records suggest that the Red Sea Tridacna costata population began do decline rapidly roughly 125,000 years ago. This is the part of our early history when scientists believe modern humans to have first begun to migrate out of Africa. Before this point in history, Tridacna costata accounted for over 80 percent of giant clams in the Red Sea – at least according to current fossil studies. Tridacna costata is a two feet long clam and it is not unreasonable to suspect that it would have been a splendid catch for early humans in search of food. Today, the species is believed to constitute less than one percent of giant clams, but this figure can of course change as the Red Sea becomes even more thoroughly explored.

Tridacna costata is the first new living species of giant clam found in two decades and was accidently discovered by scientists engaged in a Tridacna maxima breeding project. Tridacna maxima, another giant clam, is a much sought after clam in the aquarium trade.

If you want to find out more, the researchers behind the finding have posted their article online in the journal Current Biology on August 28.

Two fish species, one frog species and a number of bat flies – all previously unknown to science – are believed to have been found in Guyana during the filming of a British TV series.

While working on the three-part series “Lost Land of the Jaguar” for BBC One, a team of researchers and wildlife film-makers spent six weeks exploring the rainforests of Guyana. “In a short time, we caught hundreds of species, 10% of which may be new to science. It was unreal, unbelievable,” says zoologist Dr George McGavin, one of four presenters of the documentary.

The two newfound fishes are both small creatures; one is a small banded fish belonging to the genus Hemiodus and one is a tiny parasitic “vampire” catfish that fell out of the gills of a bigger catfish. The gill dwelling fish is a member of the genus Vandellia and hence a close relative of the feared Candirú catfishes, famous for their peculiar capability of entering the human urethra. They are commonly referred to as “vampire fish” since they feed on the blood of other animals.

The scientists partaking in the expedition will now have to sit down and research all their findings more thoroughly in order find out if this is actually entirely new species, and if so, describe them scientifically and assign them scientific names. As Dr McGavin says “Catching is the easy bit, the hard bit is going back to the lab and examining the species, comparing them to collections and books – seeing if they are new to science. One hour in the field can equal hundreds of hours in the lab.”

In addition to the possibly newfound species, the documentary includes highlights like footage of the world’s heaviest snake, the Anaconda, the world’s bulkiest eagle, the American Harpy Eagle (Harpia harpyja), and the enormous Goliath spider (Theraphosa blondi) – also known as the Goliath birdeater. The film-makers have also managed to capture on film the elusive Jaguar from which the series derives its name.

BBC aired all three episodes of “Lost Land of the Jaguar” in August 2008.

You can see a film of the small banded fish here

Guyana, previously known as British Guyana, is a small nation located at the Atlantic side of southern South America. It borders to Suriname, Brazil, and Venezuela. Being slightly smaller than the state of Idaho, Guyana is the third smallest country on the South American mainland. The land can be divided into four main natural regions: a narrow strip of fertile plain along the Atlantic coast where most of the population lives, a hilly white sand belt more inland, a highland region covered in dense rainforest across the middle of the country, and a grassy savannah habitat that can be found to the south as well as in the interior highlands.

Source: news.bbc.co.uk

Marine biologists being filmed for a BBC TV series about the ocean have managed to find no less than 13 species of fish previously unknown to science. The group also reports having 15 other animals in their possession that they suspect to be new species.

The newfound species have been gathered during deep reef dives in Micronesia in the Pacific Ocean during explorations of the so called “twilight zone”. Located at a depth of 60 to 150 meters (500 to 200 feet), the twilight zone forms a transitional region between sunlit shallow waters and the perpetually dark depths of the sea.

One of the findings is of special importance to marine aquarists – a new species of damsel fish. Damsels are very popular among saltwater fish keepers since they are one of the most robust groups of marine fish and generally adapt well to a life in aquaria. The new damsel species was caught 120 meters down off Palau and sports a bright blue colouration.

The bright blue damsel was actually spotted over a decade ago by Dr Richard Pyle, and it has been occasionally seen since then by other researchers as well, but it was during the BBC filming that the species could be captured and brought up to the surface for scientific examination for the very first time. The fish has now been scientifically described and named by Dr Pyle from the Bishop Museum, Honolulu, Hawaii.

Recreational scuba divers with ordinary scuba gear are not advised to venture any deeper than 40 meters (130 feet), so the researchers of this expedition had to use special closed-circuit rebreathers to access the twilight zone. Even with rebreathers, you quickly run out of air at such a great depth and there is no time for any meticulous investigation of the environment.

The expedition will be portrayed in the BBC series “Pacific Abyss” and the new species of damsel have been appropriately named Chromis abyssus.

Pacific Abyss starts its three-part run on Sunday, 17 August, on BBC One, at 2000 BST.

Video from the dives

Src: bbc.co.uk

Genetic and morphological analysis has now confirmed the existence of a second species of manta ray, and possibly a third one as well. Up until know, the scientific community only knew about one single species of manta ray and all encountered manta rays were viewed as variants within the same species. PhD marine biologist Andrea Marshall did however suspect that there might be more than one species of manta ray luring in the ocean and in 2003 she to a small coastal village located in southern Mozambique to be able to study the manta rays found off the African coast. During the last five years, she has been carrying out a manta ray study sponsored by the Save Our Seas Foundation and discovered a new species as well as collected invaluable information about the reproductive habits of the manta rays.

The two manta rays species have overlapping geographical ranges, but they have significantly different life styles. One species is migratory while the other one – the smaller and more commonly known species – is resident to particular costal regions where it stays year round. There are also noticeable differences in reproductive biology, skin texture and colouration.

The small, stationary species is commonly encountered by divers and researchers at coral reefs, while the larger, migratory species is much more elusive.

The pectoral fins of a manta ray can span almost 8 meters in width and the weight of this baffling shark relative can exceed 2000 kg. Unlike the stingray, the manta ray is not equipped with a functioning stinging barb, but one of the manta ray species actually has a non-functioning type of sting on its tail.

According to the Save Our Seas Foundation, Andrea Marshall’s new finding is the marine equivalent of discovering an unknown species of elephant.

You can find out more by visiting the Save Our Seas Foundation (http://www.saveourseas.com/manta-rays-a-new-species) and the Mozambique Manta Ray project page (http://www.saveourseas.com/manta-rays-mozambique).