Need help IDing these 2 cories - Tropical Fish Keeping - Aquarium fish care and resources

 
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post #1 of 4 Old 10-31-2010, 10:49 PM Thread Starter
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Need help IDing these 2 cories

Hi my fellow cory lovers..

I have a pair of cories I am having trouble identifying. They are very close, they stay together all the time and behave like a male and female, ie, they seem to always need to be touching each other when they swim. It's just way too cute.. Anyway.. I know these pictures arent the best, but I did try. From a distance the black stripes are more pronounced than they appear here. Also that spot on the left cory is actually a spot of algae on the glass.. Gotta talk to my Oto union soon, they are slacking...

Any guesses?

Thanks,

Gina
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post #2 of 4 Old 11-01-2010, 02:28 PM
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Gina, the fish on the right I would suggest is Corydoras elegans. Many species of cory, including this one, have considerable variation from fish to fish or locale to locale. The left fish may be the same species.

This species is very similar to C. nanus, and slightly less so to C. napoensis, but C. elegans is much more common in the hobby so I think that is what you probably have.

The "friendly" behaviour is common among corys of all species, male or female. They are a highly social fish, which is why they must be kept in groups. In the wild they occur in groups of hundreds of the same species, and sometimes 2 or 3 species but still hundreds of each. In sufficient tank space, five of any one species is ideal, but 3 of a species will work in smaller tanks or if you have more than one species. They sometimes interact with other species, sometimes only their own; but more than 2 corys is needed.

Byron.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #3 of 4 Old 11-01-2010, 02:43 PM Thread Starter
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Hi Byron,

Thank you for your reply. They are also part of a group of another3 c. Julii. All 5l shoal together, but these two seem to have bonded particularly strongly. All 5 cories came from the same source at the same time.

Thank you again,

Gina
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post #4 of 4 Old 11-01-2010, 03:46 PM
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Quote:
Originally Posted by ginagv View Post
Hi Byron,

Thank you for your reply. They are also part of a group of another3 c. Julii. All 5l shoal together, but these two seem to have bonded particularly strongly. All 5 cories came from the same source at the same time.

Thank you again,

Gina
Their behaviour points out what I mentioned then, that corys interact with their own species; so these two are probably both C. elegans. Adding a third would be worth it in my view.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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