Anentome helena (Meder in Philippi, 1847) has also been classified under the synonyms Cleo helena, Clea helena, Anentome cleo, and is often sold under names such as “Assassin Snail”, “Snail Killer”, or “Bumble-Bee Snail”. Our suggestion is “Bloody Helen”. Keeping this invertebrate is quite an interesting method of eliminating unwanted snails in our aquaria, an alternative and natural way of controlling the number of invasive snails (ramshorn snails, burrowing snails, etc.). Before the “Bloody Helen” appeared in the trade (at the end of 2007), snails were eliminated by means of chemical substances or fishes that fed on snails, such as loaches or paradise fishes. (...) This beautifully coloured snail from the family Buccinidae has an interestingly formedshell and feeds mostly on snails of other species.
Komunikacja ryb - Alekasandra Kwaśniak
Animals have developed many mechanisms for communication purposes. The signals they emit provide information about their readiness to breed, the species they represent, their position in the hierarchy, or any threat they face. These signals are also used to warn off, threaten, or indicate peaceful intentions towards other animals. Abilities of this type are indispensable for communication within a group, with the owner of a neighbouring territory, with a mate, with the offspring... Each such signal triggers a reaction in the recipient. Signalling methods used by fish for communication purposes include body coloration, body posture, electrical impulses, and chemical compounds (including pheromones). Some of these signals are emitted on a regular basis, some of them only periodically (e. g. breeding coloration, coloration indicating stress, pheromones Visual communication, fish that talk, chemical communication, electrical signals.
Z kobrą da sie zyc - z wizytą u Grzegorza Porowińskiego - Anna Skibicka
Most pet owners count on forming a friendly relationship with their pets. The most popular pets are, of course, those that can not only be petted and trained, but whose natural behaviour may easily be associated with human-like motivation and intelligence. (...) On the contrary, the sizeable monocled cobra (Naja kaouthia) sways its body restlessly in all directions and appears to take a keen interest in its owner observing it from the other side of the terrarium glass. (...)The president of Polskie Stowarzyszenie Terrarystyczne (Polish terrarium association) and administrator of the www.jadowite.org website became interested in reptiles when he was still in his childhood. However he had to wait until he came of age before he was allowed to keep them. Spreading information about snakes among Polish terrarium hobbyists has become his personal goal. He focuses on safety issues (his speciality), the reaction of the human body to the venom, and matters of snake biology and behaviour. (...) Venomous snakes are wild animals and their behaviour is highly unpredictable. They can’t be tamed. Any person who claims that he or she knows them in every detail, on the basis of a short period of observation of just one specimen, is gravely mistaken.
Racodactylus ciliatus - gekon nieznany - Sebastian Żmudzki
(...) The New Caledonian Crested Gecko (Rhacodactylus ciliatus) was first described in 1866. Since that time it had been sighted only occasionally and in the 20th century it had been hardly seen at all. The species had not reached the zoos and was thought extinct. (...) Currently these geckos are produced in thousands of professional farms all over the world. Due to their undemanding requirements and small size, as well as their unique attractiveness, these lizards would appear to be perfect pets for amateur terraria.
The beginnings of polish marine aquarium hobby - Marek Cebula
The years 1989 – 1990 can be regarded as the beginning of the marine aquarium hobby. While it is true that as long ago as the 1970s amateur aquarists came back from their summer holidays with a load of sea water and marine life, such attempts were rare and doomed to failure. From a historic perspective those occasional specimens brought back home from holidays (e.g. in Bulgaria) can’t be seriously regarded as constituting a marine aquarium hobby. The marine aquarium hobby couldn’t begin to develop until after the opening up of borders, the acceptance of the Polish zloty as an internationally valid currency, and the possibility of acquainting ourselves with the marine aquarium hobby in the West. All this came to pass after the collapse of the Soviet Union.
Do fishes eat with their eyes? - Andrzej Sieniawski
This theoretically simple question becomes a complicated issue if you consider it for a while. It appears there’s no unequivocal answer to the question. What’s more, giving a brief answer will immediately prompt the more inquiring aquarium hobbyist to ask more questions. Knowing that this and similar issues are the subject of research being carried out by Centrum Badawcze Polskiego Klubu Miłośników Dyskowców (the research centre of the Polish discus club) I asked them this question. It appears the research on the subject is still in progress, but even at this stage of the research some conclusions may be drawn. I will summarise these conclusions along with my own observations. (...) Do fishes eat with their eyes? What impulses do fishes register with their vision? How do fishes feed? Can cichlids kept in the aquarium be taught to eat foods they don’t accept readily?
Interview with Jerzy Kaszuba
The presence and past of aquarium associations and other organisations
Aqua Terr - Adam Adamski
Meeting in a cave in zoo in Poznań - Dominik Tomaszewski
There is a special place in the old part of this zoo – a building named “Grota” constructed in 1904-1906, designed to imitate the Blue Grotto in Capri. Already ca. 100 years ago, at the beginning of 20th century, the aquarium hobbyists from Koło Lubowników Akwarjum przy Towarzystwie Przyrodniczym (Polish aquarium association) met there for their Sunday lectures. On the first Sunday of April a group of hobbyists managed to organise an aquarium meeting in this particular historic place. Did it resemble the meetings held 100 years ago?