在國外有很多養魚的視頻也都集中在小圓缸跟生態瓶，說起來最初水族就是從生態平衡觀念發展起來的，如果你有物理常識，你就知道魚的視角不管住在哪種魚缸都不會看到凸面效果。  

大部分的魚都是靠感知水流與壓力波，如果有做過自然生態研究的，應該都知道自然界多數的魚，更多是機會主義生物會在自己的領地守株待兔，因此很多魚實際上居住的範圍遠比我們給的魚缸更小。 按照物理法則跟生物結構，其實不管是圓缸還是方形缸，都會給魚隻緊迫感，原因很簡單，沒有大量水草、泥沙、浮游生物這些能豐富他生活的東西，這在學理上被稱為內部生態微系統的匱乏。   研究室的養殖池會選擇圓型為主流，是因為圓形容器能消除水流死角，讓魚隻更容易感受到連續水流，魚缸會發展出方形缸，本來就是商業化市場為了販賣機械設備而產生的溢價空間。

  看到有人每次看到魚缸就太小、太圓，我到覺得如果你不想虐待牠，就會給他更多的空間跟魚蝦朋友，混養說到底不是不行，是因為大多數人的空間都不夠大，讓他們沒辦法住在一起。 University of Veterinary Medicine Hannover Report - Oct 2006 The conclusion: The view from the biOrbs to the outside world is clear and undistorted. The main difference in optics between the commercially available rectangular aquarium and the biOrb aquariums seems to be the reflections in the rectangular aquarium. These reflections are confusing to the human eye. It is unclear how reflections are perceived by fish. There are no indications that the spherical form of the biOrb aquariums has any disadvantages with regard to the fish’s vision. In summary, in this experiment testing oxygenation, optics, behaviour and filtration no indications were found that biOrb aquariums (60L and 30L) are any less fish friendly for free swimming fish than standard rectangular aquariums. Between the 60- and 30L-biOrb- aquarium no clear differences were found in regard to fish welfare or stability of the system.