Tropical Fish Keeping - Aquarium fish care and resources

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barbaragordon 03-04-2010 12:55 PM

Putting Different Cories Together
Hey, I just found the site, it's real cool, and I have a quick question.

A recent death in the tank has left my little albino cory all alone. There's a loach for him to hang out with, but it's just not the same. I'm planning to buy a couple new fish, and I wanted to make sure; do corys of different breeds/species get along with each other just as a school of the same species would? I'd get ones of a similar size and shape, but it'd be nice to know in advance. And if so, which corys would you recommend? I do have a male betta, which is very docile, but I'm going to avoid anything brightly colored.

And on a side note, does anyone know if an albino cory is its own species, or a subspecies of bronze cory, or what? I'm confused. Thanks in advance, and any cory stories are welcome!

Oldfishlady 03-04-2010 04:35 PM

Corydoras aeneus or bronze cory, can be either albino or bronze in color and do best and you will see better or more normal/natural like behaviors when kept in a shoal of at least 6 or more and will often spawn in the aquarium with right conditions especially right after a large water change with cooler replacement water.
They do tend to school better with their own species but I have seen different species hang out together when they didn't have a choice. Cory cats like smooth substrate like sand due to their barbels being so sensitive and easily damaged from rooting/digging around in the substrate for food. Cory cats can also be a bit sensitive to long term salt and some OTC medication.
How big is your tank and what other fish are you keeping?

Romad 03-04-2010 05:37 PM

I added two peppered (rescue) cories to my 45 gal. community which already had 4 albino cories. They all get along fine but do not school together.

do you have room in your tank for 4 or 5 more albino and 6 or so other cories? they're so much fun to watch.

barbaragordon 03-04-2010 05:51 PM

Unfortunately, I only have a 10 g. I know they're best kept in shoals, but I didn't know this when I got the tank and now I don't want to overcrowd. I feel a little bad, but they seem to do fine. My two corys always swam together, so I definitely want to get the remaining one a couple of playmates.

Byron 03-04-2010 06:24 PM

Even at the slight risk of adding more fish to your tank, you should definitely get 2 more corys. Left alone, a single cory may be stressed which brings on health issues and sometimes leads to early death. Given the space limit, a trio of corydoras would be sufficient.

Some corydoras species have a greater preference for their own species than others; I have never kept any of the albino forms, but something like the regular Corydoras aeneus (bronze or green cory as it is sometimes commonly called) or the peppered cory (C. paleatus) would probably work, unless you get two more albino corys. The one you have is probably an albino of the Corydoras aeneus species, they are the more common of the albinos. If you go with the bronze or green, be careful because there is another fish that looks identical, Brochis splendens, but it grows much larger and that puts more strain on your biological system.


barbaragordon 03-04-2010 07:00 PM

Thanks much for your help, Byron and everyone! I saw some C. aeneus at my fish store, so I'll go check it out! I think I got spooked about putting five fish in a 10g, because I did it once and the fifth fish died immediately. But that was a guppy from Petco, so it was probably on its way out already. :/

Romad 03-04-2010 07:13 PM

i'd still get a few more albinos. mine hang out together and sleep on top of each other sometimes. i think your little guy would feel better with a friend or two.

iamntbatman 03-05-2010 04:00 AM

What other fish are in the tank?

1077 03-05-2010 05:02 AM

Were it me,(and it ain't) I would not place corys in a 10 gal tank with Betta due to different temp requirements and not enough swimming room. Bettas do best in temps 78 to 80 degrees F and cory's much prefer cooler temps perhaps 74 to 75 degrees In my humble opinion. Three or four Sterbai cory's might work but they would do much better in 20 gal . Would go along with others who keep cory's over sand substrate.

Byron 03-05-2010 11:21 AM

I'd missed the betta, thanks 1077.

If the cory is Corydoras aenus, the albino form (which is the most common one), it will be fine at higher temp, say 82F. This species is found over almost the whole of South America and even onto one of the West Indies islands, forgotten which. Anyway, it has a considerable tolerance for varying water parameters. By this I mean it will be at home in soft acid water or in slioghtly harder basic water, and in 77F or 82F on a permanent basis, not fluctuating within the tank. Most species of cory would not be so accomodating.

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