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Interesting facts from the world of aquariums and aquatic animals
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Conversations Above the Surface: The Czech School of Aquaristics - Ancient Tricks for Modern Tanks
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Conversations Above the Surface: The Czech School of Aquaristics - Ancient Tricks for Modern Tanks
For Aquarist
, 1 day ago
Can a simple banana peel ensure the survival of fry, and what is the secret to the success of Czech peat extracts? In this article, we bridge biological theory with decades of breeding practice. From the physiology of labyrinth fish digestion to a tribute to the international legend Jarda Kadlec, we unveil methods often missing from modern guides. Discover the 'old school' tricks that still work in today's aquariums.
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Tanganjika: practical experiences of biologist Michael Näf in live broadcast
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Tanganjika: practical experiences of biologist Michael Näf in live broadcast
Manfred Dietz
, 6 days ago
What are the specific requirements of Tanganyika fish and what does their successful breeding involve? Join the online seminar of Michael Näf, which combines the scientific perspective of a biologist with the rich experience of a breeder. The lecture is supplemented with high-quality photographs and videos, while real-time subtitles are provided directly in the Zoom application for Czech viewers.
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Breeding and rearing of the cichlid Apistogramma agassizii in the color variant "Fire Red"
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Breeding and rearing of the cichlid Apistogramma agassizii in the color variant "Fire Red"
Breeding South American cichlids requires experience, attention to detail, and patience. The "Fire Red" variant is no exception. How does it differ from the original form, why is it important to monitor the number of females in the aquarium, and how can you stimulate their vivid coloration with quality food? We provide a detailed look at the breeding and raising of a fish that has captivated many aquarists.
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AK-Fischkrankheiten Meeting: Quarantine and Prophylaxis of Fish Diseases
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AK-Fischkrankheiten Meeting: Quarantine and Prophylaxis of Fish Diseases
Manfred Dietz
, 9 days ago
🐟 Avoid diseases in the aquarium! Zoom lecture with PD Dr. Petra Kölle How do you optimally protect your fish from diseases? Learn directly from the expert! We cordially invite you to the lecture by PD Dr. med. vet. Petra Kölle (LMU Munich). Topic: Quarantine and prophylaxis of fish diseases. Content: Minimize risks, prevent introduction, and stop spread within the stock. Barrier-free: With real-time subtitles in 40 languages.
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Conversations above the surface: natural tricks in the aquarium with Slavko Boudný and Zdeněk Dočekal
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Conversations above the surface: natural tricks in the aquarium with Slavko Boudný and Zdeněk Dočekal
For Aquarist
, 23 days ago
Do we really need to order exotic fruits from other continents for the peak condition of fish and successful spawning of eggs? In this article, we will explore how to harness the power of Central European nature – from oak leaves to juglone from walnut trees – and why the legends of Czech aquaristics often swore by the resources we literally have in our backyard. Discover the phytochemical weapons of our trees and learn how to safely apply them in your breeding practice.
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Weakly Electric Fish in Aquaristics: A Portrait of the Black Ghost Knifefish (Apteronotus albifrons)
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Weakly Electric Fish in Aquaristics: A Portrait of the Black Ghost Knifefish (Apteronotus albifrons)
Meet the "Black Ghost" of the Amazon. The Black Ghost Knifefish fascinates aquarists not only with its velvety blackness and elegant movement but especially with its unique electric organ, which serves as a sophisticated biological sonar. Keeping this South American rarity, however, is a rewarding challenge that requires patience, pristine water conditions, and a deep respect for its nocturnal nature.
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Conversations Above the Surface: Snail Population Control in the Aquarium - From Botia to Predatory Snails
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Conversations Above the Surface: Snail Population Control in the Aquarium - From Botia to Predatory Snails
For Aquarist
, 29 days ago
Controlling snail populations is an ongoing dilemma for aquarists. While some welcome them as useful cleaners, others view them as an unwanted invasion. Instead of chemical interventions, a range of effective non-chemical methods—based on natural principles—is available. These range from introducing specialized fish to utilizing predatory snails that naturally reduce unwanted species. Which biological regulators should you choose for small versus large tanks? And how can the right snails help not only with glass cleanliness but also with the critical aeration of the substrate? The key to long-term success, however, is always to prevent overfeeding, which is the primary cause of massive overpopulation.

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100 l low-maintenance aquarium
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100 l low-maintenance aquarium
4 days ago

Volume 100 l,​ lighting Diversa led expert white,​ filter JK Atman pump with biomolitan,​ plants of the genus predominantly Vallisneria,​ Rotala,​ Lugwidia,​ Echinodorus,​ Bleher's/​ocelot.​.​ no fertilization,​ no CO2.​.​ fish once Mikrogeophagus ramirezi,​ Loricaria catfish,​ various Ancistrus sp.​.​ the aquarium was in operation for 3.​5 years before it was discontinued.​.​ during the 3 years there were a few changes.​.​.​ I wanted to show a simple way without using CO2 or any fertilizers.​

DCG a Cichliden-Forum.de přejí krásné Vánoce a šťastný nový rok!
27 days ago

Přání k Vánocům a na konci roku

Drazí čeští akvaristé,​

rok 2025 se chýlí ke konci.​ Byl v mnoha ohledech jiný a náročnější,​ než jsme na začátku doufali.​ O to více nás těší,​ že se v tomto roce navázal velmi dobrý kontakt s vámi.​ Považujeme to za výjimečně pozitivní a cenný vývoj.​

Jménem Cichliden-Forum.​de,​ DCG e.​V.​ a VDA AK-Fischkrankheiten vám srdečně děkujeme za konstruktivní a důvěryhodnou spolupráci.​ Velmi se těšíme na její pokračování i v příštím roce.​

Rádi bychom také nezapomněli zmínit,​ že velké nasazení,​ mnoho nápadů a úsilí všech zúčastněných si zaslouží zvláštní pochvalu.​ Bez vašeho osobního přínosu by toto slibné partnerství nebylo možné.​

Děkujeme všem českým akvaristům a mnoha dobrovolným pomocníkům za váš přínos v končícím roce 2025.​ Každý z vás se osobním nasazením podílel na zahájení a dalším rozvoji naší společné spolupráce.​

Jsme pevně přesvědčeni,​ že i v roce 2026 upevníme naši pozici v akvaristice a naši započatou spolupráci určitě ještě rozšíříme.​

Přejeme vám všem,​ vašim rodinám,​ blízkým a přátelům poklidné adventní období,​ veselé Vánoce a šťastný start do nového roku!

Ať vám přinese pár klidných dnů – čas na rozjímání,​ načerpání sil,​ být s rodinou a soustředit se na to podstatné.​

Tyto dobré přání vám posíláme s srdečnými pozdravy

Manfred Dietz
jménem Cichliden-Forum.​de,​ DCG e.​V.​ a VDA AK-Fischkrankheiten

"Fish of the Pantanal" - Book/PDF about the fish world of the Pantanal in Brazil - free
1 month ago

The Pantanal (swamp area) is half the size of Germany and the largest contiguous swamp area in the world.​ It is mostly located in Brazil,​ with the remaining parts in Paraguay and Bolivia.​ Since the year 2000,​ the Pantanal has been a UNESCO World Heritage Site and is protected.​

It is home to numerous fish species,​ many of which are popular in aquaristics.​ The book about the fish of the Pantanal is unparalleled.​ Over 660 pages,​ the fish of this region are presented,​ with detailed text and an image that almost always shows the respective fish in live coloration.​ For each species,​ the morphological characteristics,​ live coloration,​ as well as information on occurrence,​ etymology,​ type locality,​ and economic significance are provided.​

In addition to the mostly excellent fish images,​ there are also some habitat photos.​ A large number of authors were involved in the development.​ The book is printed in Portuguese.​ However,​ with appropriate translation tools,​ this should not be a problem.​

NOTE: Portuguese text!

660 pages
PDF Digital
ISBN: 978 65-81066-05-5

Here is the link:
https:/​/​www.​cichliden-forum.​de/​Mittel-Suedamerika/​Montagem-livro-Peixes-VERSAO-FINAL-MARCO-2022-ISBN97865-81066-05-5-ONLINE_FINAL-1.​pdf

Best regards,​
Manfred

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Mexico's fish biotopes - two very interesting, informative, and free books!
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Mexico's fish biotopes - two very interesting, informative, and free books!
1 month ago

With the two volumes by Kai Qvist and Rune Evjeberg,​ you will receive extensive information and photos of freshwater biotopes and fish from the

rivers,​ lagoons,​ and cenotes of Mexico.​ The books are almost a must for those who are involved with Goodeidae,​ livebearers,​ cichlids,​ and
many other freshwater fish from Mexico or are interested in them.​
Volumes 1 and 2 of "A Selection of Freshwater Fish Biotopes in Mexico" include 337 and 241 pages and are packed with detailed information about
the biotopes,​ water parameters,​ history of the fish,​ local communities,​ and much more.​

Anyone with an account at https:/​/​de.​scribd.​com can download the two volumes there for free.​

Here is the link to it:
https:/​/​de.​scribd.​com/​document/​47090…-Mexico-v-2-pdf

Best regards,​ Manfred

Novinka: "Příručka sladkovodních ryb Západní Asie" - zdarma!
1 month ago

Ahoj všem,​

zajímavá novinka: "Příručka sladkovodních ryb západní Asie"

„Příručka sladkovodních ryb západní Asie“ nabízí první shrnutí taxonomie,​ rozšíření,​ biotopů a biologie všech sladkovodních ryb mezi Bospor,​ Ázerbájdžán,​ Jemen a Írán.​ Tento region je nesmírně rozmanitý a obývá 625 druhů,​ z nichž většina je endemická.​

Mnoho druhů je známo pouze několika specialistům a autoři strávili 18 let shromažďováním poskytnutých informací.​

Kniha nejenže ukazuje všechny druhy na barevných fotografiích,​ ale také obsahuje první lokalizované mapy rozšíření a aktuální ochranný status všech druhů podle IUCN.​ Umožňuje také jejich identifikaci pomocí určovacích klíčů a podrobných diagnóz,​ odkazuje na mnoho otevřených otázek pro budoucí výzkum a obsahuje 1142 referencí pro další informace.​ Spojuje relevantní a autoritativní informace potřebné k pochopení a zkoumání sladkovodní biodiverzity v regionu a daleko za jeho hranicemi a bude sloužit jako standardní dílo a časová osa po mnoho let.​

všechny druhy na barevných fotografiích
mapy rozšíření
aktuální ochranný status všech druhů podle IUCN
identifikace ryb pomocí určovacích klíčů a podrobných diagnóz

Citace
Freyhof,​ Jörg,​ Yoğurtçuoğlu,​ Baran,​ Jouladeh-Roudbar,​ Arash a Kaya,​ Cüneyt.​ Handbook of Freshwater Fishes of West Asia,​ De Gruyter,​ 2025.​
https:/​/​doi.​org/​10.​1515/​9783111677811

Místo vydání Berlín/​Boston
Jazyk angličtina
Rozměry 210 x 280 mm
ISBN-10 3-11-167764-8 /​ 3111677648
ISBN-13 978-3-11-167764-4 /​ 9783111677644

Stáhnout eBook (PDF 262 MB):
https:/​/​www.​degruyterbrill.​com/​document/​doi/​10.​1515/​9783111677811/​pdf?​licenseType=​open-access

S pozdravem všem
Manfred

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(200) 180l Red swamp, Southeast Asia, Channa bleheri
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(200) 180l Red swamp, Southeast Asia, Channa bleheri
1 month ago

Warning: Contains old,​ ancient emigrants from the South of America,​ representatives of the genus Corydoras.​.​ (female sterbai,​ female panda,​ male paleatus).​.​ And African plants Anubias (where to put the nice surplus?​ 🤭.​.​) They live there only to the end of their days and grow only in a stopover☝️.​.​ So take the subcategory "biotope" with a grain of salt🫠.​.​

The main inhabitant is the male Channa bleheri (somehow turned brown after two years,​ so probably the brown form),​ bred by Kuba Lasota,​ Heiko.​ Snails Planorbids,​ Lymnaeids,​ one lost Clithon,​ lost and rediscovered Melanoides,​ Filopaludina.​.​

It is still a low-tech aquarium,​ where the only technology includes a pumping head from jk animals and an LED tube hsbao retrofit.​ Occasionally a skimmer jingye,​ for emergencies when one doesn't want to use tweezers.​.​ But I don't want to get rid of it completely (is that possible?​),​ I make jichu for watering houseplants 😁.​.​ We fertilize with fish waste and maximum long-term NPK fertilizer in the substrate.​ The used leachate is literally alchemy.​ The base is Kachu,​ leaves of Quercus robur,​ Fagus,​ Schima,​ alder cones and leaves,​ Sphagnum,​ torf,​ lotus petals,​ lotus fruit.​.​.​.​ The representatives of the plants growing here are Microsorum,​ Cryptocoryne,​ Bolbitis,​ Najas,​ Limnophila,​ Schismatoglottis,​ my favorite and simultaneously hated Lotus tiger,​ sometimes red,​ sometimes green,​ as it pleases (can be seen in the photo in my gallery,​ so I'm not making it up.​.​),​ which was obtained by Jirka Fojtik from Surpan and from whom I also have Schismatoglottis (thanks!),​ Limna,​ Rhygoriza (I have it again after 5 years,​ thanks to Míla Popelka 🍀),​ and somewhere among all this are still living,​ just somehow leafless stems of Hydrocotyle leucocephala 😅.​.​.​ And finally,​ Java and hybrid mosses,​ Cladophora and Rhizoclonium,​ which didn't want to grow for a long time .​.​ 👌.​.​ And the lighting conditions themselves?​ Terrible.​.​.​ But it's growing! 😂