Author Archives: william


10 most expensive fish species

10 most expensive fish species

I recently visited a friend who makes his living as a day trader and who had earned a small fortune taking short positions while margin trading CFD positions. Don’t worry if you didn’t understand a word of that, I didn’t either until he told me to read this website. He invited me to see his new fish that he purchased to celebrate his recent fortune, 1 Red Arowana and a Platinum gar!!! I am so jealous of this guy right now. Continue reading

Fish of the day: German Blue Ram

The German blue ram is a fantastic little fish.  It is a true gem that can be kept with other friendly species.

New Website

New Website

Welcome to the new AquaticCommunity.com.   The new layout is only available on selected pages and will be slowly rolled out as I am able to iron out bugs and other features.  Right now the only new page that is visible is the index page. I will update this page as i add the new layout to new sections.

I am doing it in baby steps since AC is a very large website and I do not want any mistakes to affect all pages.  It is better that the bugs can be discovered on a single affected page before I update more pages.

The new layout is very different from the old one and i know that some people will not like it.  The old layout do however work very poorly on mobile devices and we have to change with the times.  The version of the index page you can see right now is not the final version. It will develop over the coming weeks.  The main focus right now is to make sure that it loads fast and that it scales well on different devices.

The new layout is a little bit disappointing at the moment. But i am sure the end result will be great.

I usually aim high end up changing nothing.  This time i want to change one small thing after the other and hopefully bring AC into the modern era.

New Population of Mangarahara Cichlid, Ptychochromis insolitus found

Ptychochromis insolitus
The Mangarahara cichlid is known as one of the most endangered cichlids in the world. The Zoological Society of London (ZSL) thought that their two males, together with one fish at the Berlin Zoo might be the last 3  in the world. In a hope to try to save this species they reached out to the public and aquarists around the world to see if anyone had a female Mangarahara cichlid. Continue reading

Two species of African Slender-Snouted Crocodile – Mecistops cataphractus

Image credit: Leyo

Image credit: Leyo

An international team of researchers from the University of Florida and the SFM Safari Gabon have through DNA Testing discovered that the African Slender-Snouted Crocodile ( Mecistops cataphractus) is actually two different species. Continue reading

New Arapaima species -Arapaima leptosoma – Slender Arapaima

arapaima-leptosomaA 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 . Continue reading

Fake seagrass help us learn how to save dwindling fish populations

Red snapper

Red snapper

A large amount of New Zealand’s seagrass have been killed by sediments released from land development. The seagrass bed at Whangarei Harbour has for instance been reduced from 14 sq km in the 1960s to virtually non-existant today. And sedimentation this is not a new problem – between 1959 and 1966 Tauranga Harbour lost 90 per cent of its seagrass.

Researchers at New Zealands’s National Institute of Water & Atmospheric Research are now fitting the floor of the Whangapoua Estuary with plastic seagrass in an attempt to show how New Zealand’s fish stocks could be boosted by restoring the seagrass habitats. The “seagrass” consists of plastic fronds attached to wire frames, and the length of the fronds varies from 5 cm to 30 cm.

“We made them with tantalising long blades of artificial grass, the things fish really go for,” says NIWA fisheries ecologist Dr Mark Morrison. “What we found, initially, is that fish are really looking for shelter and seagrasses provide good protection to fish.”

The largest density of fish could be found where the density of seagrass was also at its largest.

Fish is now being tagged to make it possible for the researchers to track both growth rate and survival rate.

Grown tired of you fish? Drop in the mail box!

fishmailbox

Sounds weird? If so you haven´t heard about the ”fish mail box” in Inada Park, Kawasaki, Tama River in Japan near Tokyo. The ”fish mail box” is a 7 meter by 4 meter large concrete water tank that have been placed along the river to give people a place to drop unwanted fish. The goal of the fish box is to prevent people from releasing fish into the river, since foreign species can wreck havoc with local ecosystems.

People are encourage to call before they drop off their pets as fish can die from the shock if not acclimatized correctly, but it is is permitted to just drop off fish as well. People are also encouraged to drop off tropical invasive species they catch in the river in the fish box.

The fish left in these fish boxes are cared for by Mitsuaki Yamasaki, 51, the head of a local river fish association, before they are placed in new homes. The box is receiving about 10,000 fish a year ranging from small fish to large gars.

The Tama River has seen a lot of new species released in it in recent years during which the aquarium hobby has become even more popular in Japan than before. This has in no small part to do with the movie “Finding Nemo”, even if the increase in popularity started before the movie was released. More than 200 species of foreign tropical fish have been found in the Tama River ranging from typical aquarium fish such as guppies and angelfish to less frequently kept creatures like piranhas and arowanas, earning it the nick name the Tamazon River. Some of the tropical species have established breeding populations while others haven´t, but most species can survive the winters by staying near water treatment areas along the river.

Mitsuaki Yamasaki and other members of the local river fish association are afraid that breeding populations of gars will establish themselves in the river since more and more gars are sold and they have been found in the river. Gar species are predatory fish that could have a severe negative impact on native fish such as sweetfish . Gars are likely able to establish breeding populations in a river with the conditions of the Tama River.

It can not be denied that with over 10,000 fish received by one of these fish boxes since it opened the initiative could aid the struggle to prevent invasive species from getting a foothold in local waters, and it might be an idea that deserves being tried in other problems areas around the world, such as Florida. The only question is if projects like this could work with out the devotion and support from people like Mitsuaki Yamasaki, people who are really passionate about what they do.

Any one interested in or planning to start a similar project somewhere else is very welcome to contact us here at AquaticCommunity as we would love to document your work getting the project of the ground and running it. Leave a comment in the commentary field or send an e-mail to admin@aquaticcommunity.com.

BP-oil threatens cold-water corals

Oil spill

Photo by: Igor GOLUBENKOV

Thousands of barrels of oil continue to leak into the ocean from British Petroleum’s Deepwater Horizon each day, and as we have been able to see in countless news reports a lot of it reaches the surface.

Less well known is that a significant portion of the oil never make the full 1 502 meter (4928 feet) journey to the surface. Instead, the stratified waters of the Gulf of Mexico capture the oil or slow down its ascent, and this oil is now threatening numerous life forms far below the surface.

According to Dr Gregor Eberli, Dr Mark Grasmueck and Ph.D. candidate Thiago Correa – all three from the Marine Geology & Geophysics division of the University of Miami (UM), the oil that fails to reach the surface is a serious threat to planktonic and benthic life throughout the region, including many species of cold water coral. Planktonic life is all the tiny living creatures the drift around in the ocean, while benthic life is life confined to the sea floor.

The deep water communities within the Gulf of Mexico and in the Straits of Florida are well hidden from us, but they include many species of cold-water corals that live in water at depths of 600 — 1500 m. (1969 -4921 ft.) in waters as cold as 3° Celsius (37.4°F),” Eberli explained.  “Unlike their more familiar shallow-water counterparts, these corals do not live in symbiosis with unicellular algae called zooxanthellae, but are animals that feed on organic matter floating through the water column. We know that most of the food consumed by the cold-water corals is produced in the surface waters and eventually sinks down to the corals.”

To make the problem even worse, the large plumes formed as a result of the oil spill has placed themselves between the deep-water corals and their food source. Some of these plumes are several miles long, and organic material – i.e. animals and plants – that sink through the plumes will become contaminated by micron-sized oil droplets. These droplets might not look as dramatic as a sea surface filled with crude oil, but they are equally damaging.

It is most likely that the delicate cold-water corals are not able to digest these oil-laden food particles and will perish in large numbers,” said Eberli. “We are especially concerned because the migrating oil plumes have the potential to destroy or greatly diminish these deep-sea coral communities as they are carried by the currents. These corals are important because they are the foundation of a diverse ecosystem that at last count includes over 1,300 marine species, according to Dr. Thomas Hourigan at NOAA.”

Severe damages might not be limited to the Gulf of Mexico

The Loop Current transports water from the Gulf of Mexico to the Atlantic Ocean, passing through numerous significant coral sites on its way from the eastern Gulf of Mexico through the Straits of Florida and northward to the Blake Plateau off North Carolina. The water enters the Straits of Florida to form the Florida Current and further north the Gulf Stream. Tiny droplets of oil suspended in the water could therefore wreck havoc with ecosystems far away from British Petroleum’s Deepwater Horizon.

While several (albeit not perfect) methods do exist for cleaning crude oil from the surface of the ocean, we know hardly anything about how to rid the water column from oil plumes.

June 7: NOAA modifies fishing closure in oil-affected parts of the Gulf of Mexico

Due to the massive Deepwater Horizon oil spill, also known as the BP Oil Spill, parts of the Gulf of Mexico is closed for both commercial and recreational fishing.

The latest update from the National Oceanic and Atmospheric Administration (NOAA), the United States agency responsible for handling the closure, arrived on June 7 and became effective 6 p.m. eastern time on the same day. According to this update, the prohibited area now measures 78,264 sq mi (202,703 sq km), or about 32% of the Gulf of Mexico exclusive economic zone.

Map:

As stated above, all commercial and recreational fishing is banned in the area, including catch and release. It is however still legal to transit through the area.

Since it is impossible to know the exact extent of the oil spill at any given time, NOAA has advised fishermen to refrain from fishing if they notice any oil or oil sheen, even if it is outside the prohibited zone.

For those who wish to receive information as soon as the prohibited zone is modified, there are several channels to utilize:

– Get bullentins to your inbox by sending an e-mail to SERO.Communications.Comments@noaa.gov

– Get SMS notifications. Sign up by texting fishing@gulf to 84469.

– Follow NOAA on Twitter: usnoaagov

– Visit http://sero.nmfs.noaa.gov/deepwater_horizon_oil_spill.htm

– Listen to NOAA weather radio