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Discussion Starter · #1 · (Edited)
Hi all..
So I admit, this may be a stupid question. But it's genuine.
I'm absolutely in love with cory catfish. And I want a tank for just cories. I was just wondering. Do they need a lot of space to swim up and down? I know that they do swim to the surface at times, but as long as there is a lot of surface area, but not much vertical swimming space, will they be okay? I was thinking along the lines of a plastic bin, not to high, but long. Any oppositions to this idea? I have the fishes best interest in mind, which is why i'm asking rather than just doing, so I'd appreciate no rude remarks. Thanks in advanced!


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While I have never tried to keep Cory in less than 12" of water, I have heard advice from well know fish breeders not to keep fish in less than 12" of water. They say that they are uneasy as the water is shallow; I guess a fear of being seen from above by a predator.

Not sure which Pygmy cory you are talking about as there are 3 that use that common name (C.habrosus, C.hastatus and C.pygmeaus). Hastatus and Pygmeaus have a tendency to be mid water swimmers and would likely not do well. Habrosus would likely be the best bet in a shallow tank.
 

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Discussion Starter · #3 ·
While I have never tried to keep Cory in less than 12" of water, I have heard advice from well know fish breeders not to keep fish in less than 12" of water. They say that they are uneasy as the water is shallow; I guess a fear of being seen from above by a predator.

Not sure which Pygmy cory you are talking about as there are 3 that use that common name (C.habrosus, C.hastatus and C.pygmeaus). Hastatus and Pygmeaus have a tendency to be mid water swimmers and would likely not do well. Habrosus would likely be the best bet in a shallow tank.


Thank you for your response!
I was thinking along the lines of c. Habrosus.


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My bronze cories seem to like swimming in mid-water, and do so almost as much as they cruise the bottom. I think that regardless of species all fish like a reasonable water depth. Speaking from experience of observing fish in the wild, I have rarely seen (with the exception of fry) fish swimming in less than 10in of water if there is deeper water nearby. Thoth is correct in the assumption of fish feeling more secure in deeper water, for protection from predators. I personally wouldn't keep fish in any less than 12" (30cm) of water. Cheers and good luck
 
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