Funny Question

[Dorkhedeos]

gravity plays a big part, so does light. if light was coming from the bottom and everything was reversed, i think they would swim on their sides. if you have a tank near a window where light comes in, and you dont have a light, you will notice that the fish swim at an angle

 

[sylvia]

It would probably have some effect on the position they swim in but it is unlikely that they would flip completely upside down.

Having said that, many lviebearers, guppies in particular, will swim with the light above them regardless of where the light is actualy positioned so you never know.

This is why when people talk about keeping guppies in tanks without lighting I start to worry. IME, if you keep guppies in a tank with the only source of light coming from the window accross the room for example, they all start to swim sideways. If the tilt is only slight then it usualy doesn't cause problems but if it's significant, many health problems can arise as the fish needs constantly to move its body and fins in an unatural way to retain that position.

It might be interesting to try making the hood very dark and putting a light source under the tank and then blocking out the light from all other sides to see if guppies would start swimming upside down.

 

[ccg]

I have a red tailed black shark that spends half his day swimming upside down and has no problems doing so.

 

[simonbrown403]

fish always no which is up, apart from when you take one to space, then they are confused and swim in circles.

as for light if you covered the top of the tank and made it dark and put a light under the tank there colour whould change over time, colour acts as a canoflarge, lighter colour on the belly to blend with the light sky, and darker on top to blend the dark depths or substrant, makeing it harder for preditors to see them from above and below.

 

[CatLover]

You are so right about the camoflage thing, simon. Their color would change after a long time, and if they bred, you could start a new color gene.

 

[Grey Legion]

Wow, that is really interesting

Man I just love posts that get you thinking, even if they start out silly look how well this one has grown..

 

[simonbrown403]

You are so right about the camoflage thing, simon. Their color would change after a long time, and if they bred, you could start a new color gene.

do you think if we put multi coloured disco under the tank, we might end up with some multi coloured wonders, just imagin disco tetras and funky corys