Fish You Wouldn't Keep In Any Tank.

[chishnfips]

A lung fish, they are horrible

Nothing over 12 inches long.

opportunity for a crude joke there

but I will keep that to myself

 

[grumpymole]

a fully grown pleco
i mean

 

[keane]

I wouldnt keep any species with an adult size above 30 inches, even a fish of this size requires a tank of 10x4x3 which is probably about the biggest tank anyone is likely to have at home.


On arowana's not all species grow as large as the silver arowana. Australian, Asian and black arowana's rarely grow larger than 2 feet and can easily be housed in tanks of 180 gallons or more.

Arowana = 2 feet = 24 inches. Can be kept in a 180 gallon tank

A.N.Other fish = 2.5 feet = 30 inches. Requires to be kept in a 900 gallon tank
(Calculation 10 x 4 x 3 = 120 cubic feet = 897 plus a bit gallons)

Why does a fish just six inches longer than an Arowana require 720 more gallons??

(I appreciate you said "above 30 inches" but surely a 36" fish doesn't require such a huge dispensation either if an Arowana can thrive in a 180.)

steve

 

[Ethos]

I'd keep koi in a pond, but not inside unless its during the winter in one of those blow-up 800G temperary holding tanks...

 

[solidshark55]

a geat white shark of coarse

 

[prankster705]

Marine sharks, shark catfish, pacu, big plecs...

 

[Isis_Nebthet]

Arowana = 2 feet = 24 inches. Can be kept in a 180 gallon tank

A.N.Other fish = 2.5 feet = 30 inches. Requires to be kept in a 900 gallon tank
(Calculation 10 x 4 x 3 = 120 cubic feet = 897 plus a bit gallons)

Why does a fish just six inches longer than an Arowana require 720 more gallons??

(I appreciate you said "above 30 inches" but surely a 36" fish doesn't require such a huge dispensation either if an Arowana can thrive in a 180.)

steve

You have to take into consideration the confortable swimming space for the fish (more turning room ect). 6 more inches can be a LOT more fish with monsters.

 

[SnowyzMom]

Well apart from a Tuna I'd say any species of Octopi. I know some are very small but they're all very intelligent, problem solving intelligent and master escape artists to boot.

 

[Paul_MTS]

I wouldnt keep any species with an adult size above 30 inches, even a fish of this size requires a tank of 10x4x3 which is probably about the biggest tank anyone is likely to have at home.


On arowana's not all species grow as large as the silver arowana. Australian, Asian and black arowana's rarely grow larger than 2 feet and can easily be housed in tanks of 180 gallons or more.

Arowana = 2 feet = 24 inches. Can be kept in a 180 gallon tank

A.N.Other fish = 2.5 feet = 30 inches. Requires to be kept in a 900 gallon tank
(Calculation 10 x 4 x 3 = 120 cubic feet = 897 plus a bit gallons)

Why does a fish just six inches longer than an Arowana require 720 more gallons??

(I appreciate you said "above 30 inches" but surely a 36" fish doesn't require such a huge dispensation either if an Arowana can thrive in a 180.)

steve

The difference is a arowana are quite agile so can turn in tighter spaces. if you take your self a 2ft cichlid, like say a peacock bass you need about 300gallons with a footprint of about 8x3. as these fish are very robust and can't turn in such tight spaces.

 

[Fish_Mike]

Wild-caught fish without doubt.

 

[Teelie]

Most snakehead species as they can devastate not just the water body some well meaning fool lets them loose in once they can't keep it anymore but they can also move to other water bodies thanks to their ability to move out of water and across land. I know some are safe but it's not them I'm concerned about.

Also think most of the larger catfish species shouldn't be kept as they do just grow so large only a zoo or the like can afford the size of housing they need.

 

[timmystood]

Sperm whales. Most people keep them in big tanks and think they will be fine - but they need about 4 times their body size as their immune system can only handle fresh water through special organs called 'hemaomggs' - they dilute the water and then exapnd through the sperm whales Gorsfgs Gill...

... Almost had you believing me there!

 

[spAcE mOnkEy]

Any fish could be kept in a tank givin that the size is big enough. I wouldnt keep any fish that gets over 3ft, but if i did manage to get a tank that could house a 4ft fish or larger... i deffinatly would get a 4ft fish.