Why did fishes venture onto land? Part 2

Last time we looked at the “living fossils”, ancient fishes that breathe using lungs and have stout scales and limb-like fins or fins on stalks. None of the species in existence today displays any serious inclination to venture onto land, and hence they don’t answer the question of why at some time in the past fishes made their way ashore. Perhaps there are modern fish species that can provide an answer?

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Dwarf aquatic frogs

The maintenance of many aquatic frogs is largely something for dedicated animal enthusiasts who are prepared largely to overlook the fact that decorative planting of the aqua-terrarium is not entirely compatible with their pets. As the vast majority of aquatic frogs, that is frogs that live year-round in the immediate vicinity of water, grow to significantly more than 5 cm long. So delicate plants don’t stand much of a chance in the long term… But for a while now there has been a little frog on the market that grows to only around 3.5-4 cm long and is perfectly suited to the attractively planted aqua-terrarium: the Green Puddle Frog, Occidozyga lima.

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Parauchenoglanis – how to identify bycatches (or not)

The majority of the roughly 33,400 fish species currently known to science have never yet been maintained in the aquarium. Little more is known of them than that they exist. And even that often isn’t certain, as in the course of the centuries – as is well known, our modern zoology started in 1758 with the 10th edition of Carl von Linné’s book Systema naturae (= The System of Nature) and Linné still believed in the original creation by God and the immutability of species – our view as to what actually constitutes a species has undergone frequent and fundamental changes.

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The Sun King and the reptiles

When did humans begin to keep reptiles? Of course we don’t know exactly, but crocodiles and snakes played a major role in the religion of Ancient Egypt. Crocodiles had temples of their own and so did snakes. It is probable that every type of animal maintenance was originally for religious reasons. The keeping of animals in the Stone Age, during the so-called Neolithic revolution, was undoubtedly originally influenced by religion. Otherwise why were cattle domesticated, but not bison?

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Top Imports February 2017

As each month we present the most popular fish imports sponsored by Aquarium Glaser! Gnathocharax steindachneri In the natural habitat of the cardinal tetra food sources are very scarce. So it is really astonishing how many species can exist there....

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Hans-Albrecht Baensch is dead

Hans-Albrecht Baensch died on 2nd November 2016 at the age of 75. It is probably no exaggeration to say that the modern aquarium hobby is closely linked with the name of Baensch, so closely that it is difficult to imagine it without the Baensch family.

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