AMAZONAS Magazine “BON APPÉTIT” Inside Look
29 Mar, 2023
AMAZONAS Magazine, Volume 12, Number 3, BON APPÉTIT. On the cover: Pelvicachromis pulcher fry feeding on microworms ( Panagrellus redivivus). Photo: Toxotes Hun-Gabor Horvath/ Shutterstock
The May/June 2023 issue of AMAZONAS Magazine is printed and on its way to the homes of magazine subscribers and racks of the best local aquarium shops around the world!
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AMAZONAS Magazine Back Issue Shop. The Table of Contents for the May/June 2023 issue of AMAZONAS Magazine. You can view this TOC online! AMAZONAS Executive Editor Courtney Tobler introduces the issue, reflecting on the role that food plays in our own lives as well as those of the fishes we keep. “This issue of AMAZONAS is all about what to feed your fish and why,” says Tobler. The AMAZONAS Aquatic Notebook presents short stories of relevance to the freshwater aquarist from around the globe. In this issue, we start by remembering former AMAZONAS team member Ray Lucas, who has left an incredible legacy in the organized aquarium hobby. Also in this issue’s Aquatic Notebook, SHOAL reviews highlights of new fish species described in 2022. By examining the biological adaptations of fishes in relation to food acquisition and the basics of their nutritional requirements, Michi Tobler delivers sound advice on how to provide well-balanced, appropriate diets for aquarium fishes. If you want to keep some aquarium animals, or even breed them, providing special food is usually necessary. “Puddle in a box: A simple live-food hatchery” by Sebastian Wolf and Richard Wolf describes an unconventional, productive, and largely work- and cost-free live-food culture that makes it easy to feed even the tiniest of fry and other challenging aquatic animals. Many articles about the breeding of aquarium fishes mention Artemia nauplii as a first and intermediate food for fry. Such statements certainly don’t apply to every fish species, but it is hard to imagine the modern aquarium hobby without baby brine shrimp. Hans Ruhrmann shares a unique perspective on methods to produce this valuable live-feed for aquarium use. Given the large number of fish species that we keep and breed, it is necessary to fulfill many different conditions when fry appear and start to feed independently. Some are satisfied with what can be found in the aquarium, others are happy with finely powdered dry food, yet others require small live food items. Live microworms ( Panagrellus redivivus) make an ideal first or supplementary food, and culturing them could hardly be easier! Hans Ruhrmann & the AMAZONAS editors provide all the instruction you’ll need to be successful in culturing these highly useful prey organisms. Do you feel despair at the thought of rearing tiny fish fry that are still too small to eat even freshly hatched Artemia nauplii? Starting them on microscopic foods, such as freshwater rotifers, is the solution. Learn how to culture freshwater rotifers using this very simple method from Marco C. Haupt & the AMAZONAS editors. Have you ever considered raising Artemia beyond the baby brine shrimp (nauplii) stage? Obtaining and hatching Artemia cysts are relatively simple processes. As it turns out, maintaining a breeding population of adult brine shrimp is possible, too. Marco C. Haupt shares his experiences creating a “brine shrimp biotope” of sorts outdoors, providing a sustaining population of brine shrimp that can be harvested for aquarium feeds. In “Big Brains and Electric Senses of Weakly Electric Fishes”, Dr. Klaus M. Stiefel explains that South American knifefishes and African elephantfishes are two taxonomic groups of fishes that independently evolved specialized electric organs. With these, the fishes can not only detect electric signals but also emit electric discharges to locate prey in their usually dark or turbid habitats. Discover the immense brain-based processing power that allows for the impressive capabilities of the weakly electric fishes. As a native to Australia and New Guinea, the Concave Goby ( Glossogobius concavifrons), named for its incurved forehead, makes a nice tank companion to the rainbowfishes of the same region. Unlike gobies that require time at sea for at least part of their lives, the Concave Goby will spawn and thrive in a freshwater system. Author Hans-Georg Evers calls it a perfect goby! The BIOTOPE AQUARIUM Project conducts an annual contest where entries are judged based on gathered information about a specific natural habitat, the accuracy, viability, and aesthetics of an aquarium replicate of the biotope, and the quality of additional support materials, such as photos and videos, that accompany each entry. Author Natasha Khardina presents this 2022’s winners, and invites aquarists to submit entries for the 2023 season. Learn more at https://biotopeaquariumproject.com/ The AMAZONAS Aquarium Calendar returns, highlighting large-scale multi-day events of particular interest to aquarists! Organizing such an event? Email firstname.lastname@example.org well in advance to let us know! Whether you’re looking for rare AMAZONAS back issues or unique fishes and aquatic plants, check out Sources, our printed and online listing of local aquarium stores in the U.S., Canada, Chile, Great Britain, South Korea, and Sweden, where you can buy AMAZONAS right off the shelf. We close out each issue with Species Snapshots, a look at rare and unusual fishes showing up in the aquarium trade and hobbyist circles. In this issue, Aquatropic’s Jim Walters discusses the fascinating Green Spotted Crocodile Pikehead (Luciocephalus aura), Oliver Lucanus from Below Water examines the unique Freshwater or Tiger Moray Eel (Gymnothorax polyuranodon), along with the brand new Brazilian exports of the Red Adipose Tetra (Erythrocharax altipinnis).
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