Two researchers carried out an investigation into the noise exposure of one of the aquariums due to the visitors in the Schönbrunn Zoo in Vienna, and found some surprising results. They hid an underwater microphone in a one cubic metre aquarium to register the effects of visitors tapping on the glass. Helmut Kractochvil and Harald Schwammer investigated this activity for four weeks, counting the taps per 100 visitors between midday on Monday to midday on Friday, and then from midday to Friday to midday on Monday. They then introduced three different signs with the inscriptions: “Tapping on the glass kills the fish”, “Only idiots tap the glass”, and “Please do not tap the glass”.
As long as there are aquariums, there will be in-depth discussions about how frequently the water should be changed! Although this opinion is nearly obsolete, there are some exotic fish keepers who believe the aquarium works with a biological balance similar to that found in nature, and that changing the water can damage this.
Anyone who has fulfilled the lifelong dream of buying an aquarium will be eager to populate it as quickly as possible! It is important to select the appropriate number of fish for the space you have available, and you will need to ensure you have matched these fish according to their respective needs, such as water type. To do this you should consult a marine expert or other trusted form of guidance.
Are you looking for an adaptable cat for domestic life, if possible with a long coat? Also commonly referred to as the Highlander, the British Longhair is the semi-longhaired alternative to the British Shorthair, sharing its friendly, even-tempered manner but with a lesser urge for activity.
Dog owners should give thought to contraception for their beloved pets at the very latest when females enter heat for the first time and males suddenly prey on females in the neighbourhood. But what methods actually prevent females from getting pregnant and what forms of contraception are there for males?