What is believed to be a new species of fish has been discovered deep in the Tasman Sea. What makes the new fish unique is that it has two sets of eyes. Rhynchohyalus natalensis, aka glasshead barreleye, uses one set of eyes to watch for predators while the other set looks for prey. R. natalensis is a true four-eyed fish and is different from fish of the genus Anableps. While Anableps genus fish, pictured below, are often referred to as having four eyes, they only have two eyes that are each divided into two parts giving them a simultaneous above and below the water view.
Rhynchohyalus natalensis has two individual sets of eyes. The top set is used to see other animals silhouetted against the dimly lit waters. The bottom set of eyes detects bioluminescent flashes created by deep-sea creatures. To read more about this new discovery and see more pictures of the unusual four-eyed fish visit dailymail.co.uk’s Science and Tech webpage.
The title, digital aquarium technology, does not mean the latest version of Fish Farmville or virtual aquarium. The digital technology I’m referring to is the type that will help you maintain and safeguard your fish. For the more tech-savvy hobbyists there are a couple different products that might help integrate fishkeeping and your latest smartphone. The first type of product is a digital manager/log. Available for both iOS and Android, these digital aquarium managers will help keep track of your tank’s inhabitants, water conditions and maintenance schedules. Whether you have an iPhone or Android device, check your app store for what is available. It may take a little searching with the right keywords to find something you can use.
The other type of product is more than an app. Using a water detector designed for general home use, you can detect water leaks before they destroy your livingroom and your fish. These water detectors can use your home’s WiFi signal to notify your smartphone that there is a leak. If temperature and humidity levels are something you need to watch, these types of devices can also help you monitor those levels too. These types of products do require a substantial initial investment, but it may be worth it.
For a while I’ve been considering purchasing a large acrylic aquarium. I really like how clear acrylic looks compared to glass. On a whim, I stopped by a local shop to have a look at what they carried. I knew they were expensive, but I was still taken aback by the cost. The price wasn’t even the only issue. I was planning on a large shelldweller/rockdweller Tanganyikan community tank. Most of the tanks I saw had large water volumes, but they were very tall with a small footprint for what I needed. Sad and disillusioned I drove home. It wasn’t until later I remembered an article posted about 10 years ago in the Do-It-Yourself section of the library. When I first read the article a DIY acrylic aquarium seemed really cool, but at the time I was using smaller tanks. It was just easier and more practical to buy glass tanks.
Anyway, I’m really looking into the idea of a DIY acrylic tank. Not only will I be able to save some cash, but I’ll be able to build it to the dimensions I need. There won’t be a foot of wasted space at the top. If you haven’t read Brad Newton’s Building an Acrylic Aquarium article, check it out. You might just get inspired.
Crenicichla gillmorlisi, new species from Paraguay
Crenicichla gillmorlisi. Photo by Walter A. Gill Morlis A.
A new species of Crenicichla, aka pike cichlids, has been found in the Paraná river drainage of Paraguay. Crenicichla is a large genus with around 100 described species. These predatory fish make their homes in rivers, streams and ponds of South America. Most are located in the Amazon basin, but some can be found as far south as central Argentina. While pike cichlid species vary in size from a few inches to up to 2 feet, the new species of Crenicichla gillmorlisi reaches a maximum of around 8″.
For a hobbyist, pike cichlids can be a challenge to keep. They can be very aggressive and finding suitable tankmates can be difficult. Aquarium size is also an issue particularly with the larger species. If you are looking for a challenge and think that Crenicichla might be something you are interested in keeping, make sure you read Vinny Kutty’s Introduction to Pike Cichlids or Dwarf Pike Cichlids articles.
For complete information on Crenicichla gillmorlisi, the full description can be found on the Biotaxa.org website
This week an environmental assessment study into the possible effects of drilling for oil in Lake Malawi was completed. Oil production, especially to a country like Malawi, can be a big economic boom for the region. Environmental risks should always be factored into the equation whenever drilling for oil is considered. Lake Malawi isn’t just where cichlids come from, it is a source of water and food for millions of people. That being said, a troubling detail about the environmental assessment is that it is being conducted by the same company licensed to drill for oil. The study isn’t being conducted by an independent organization that can gain from turning a blind eye to environmental dangers. To find out more about SacOil and the environmental concerns in Lake Malawi, visit OOSKAnews.
The other day I was feeling a bit nostalgic so I decided to pop in an old favorite VHS tape. Yes I still have a VHS player, don’t judge me. In the mid-90s National Geographic released Jewel of the Rift, and it turned me on to Lake Tanganyika cichlids. Until them I had only kept Lake Malawi and Victorian cichlids. Unfortunately, Jewel of the Rift was never released on DVD. The video has some great in the wild footage of Tanganyikan cichlids; from the smallest cichlids living their lives in shells to emperor cichlids protecting their young. If you have never seen the video or haven’t in a while, take some time to view it. There are several YouTube channels that have the entire video in parts. Unfortunately, they all appear to have originated from one of two versions. One version has good audio while the other version has better video, but poor audio. I found that Dailymotion has a pretty good version.
The Nicaraguan government has granted Hong Kong based Nicaragua Canal Development Investment Company permission to develop a canal linking the Pacific and Atlantic oceans. The $40-billion project will undoubtedly help the economically struggling Central American nation. The proposed paths of the new canal will not only cross various wetlands and reserves, but also Lake Nicaragua. Lake Nicaragua is home to a variety of cichlid species which have already been devastated by the introduction of non-native fish species.
Mark your calendar for the Northeast Council of Aquarium Societies 39th annual convention. The convention will be held at the Crowne Plaza in Cromwell, CT from March 28 – 30, 2014. The NEC was established in 1956 to assist and strengthen member societies. Currently there are 29 member organizations including the Boston Aquarium Society, New England Cichlid Association, and the Cichlid Club of York to name a few. If you live in the Connecticut, Massachusets or New York City area, seriously consider attending this event. Talks will include digital photography, keeping and breeding cichlids, aquascaping, and many more fish topics. These is a great list of speakers. Vendors will be present to show off their stuff and of course Sunday there will be a huge auction.
For more information visit the Northeast Council of Aquarium Societies 2014 Convention page. If you live in the area, don’t miss out!
A new species of dwarf Apistogramma has been formally described. Apistogramma helkeri, named after collector Oliver Helker who found the fish, becomes the 83rd described Apistogramma species. Currently found only in a black-water swamp of the lower río Cuao, a tributary of the lower río Sipapo in Venezuela. Individual Apistogramma species are known to be limited to small ranges which is one of the reasons there are so many different species in the Apistogramma genus.
The detailed description of Apistogramma helkeri can be found on Senckenberg.de in pdf format. For more information on keeping the small tank friendly dwarf Appistogramma, check out the Apisto Keeping & Maintenance article by David Soares.
Telmatochromis temporalis Magara. Photo by Ad Konings
A study of Telmatochromis temporalis by the University of Bristol has shown that competition plays a role in the evolution of new species. T. temporalis is an endemic cichlid from Lake Tanganyika. According to the study, the larger T. temporalis drive the smaller temporalis away from the preferred rocky habitat. The smaller T. temporalis are forced to build their homes in shells along the sand. The competition for the preferred habitat has separated the two groups of fish. Once separated, the two groups will only breed among themselves. This separation opens the door for different evolutionary paths. Ad Konings has always considered T. sp. “temporalis shell” to be a morph of the original T. temporalis.
A video by one of the authors of the study explains the process: