are my cories happy? - Tropical Fish Keeping - Aquarium fish care and resources
 
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post #1 of 8 Old 04-02-2011, 11:01 PM Thread Starter
Question are my cories happy?

I have 2 panda cories and 3 laser cories (I think from what I've read, aka c. aeneus) in a 20 gal with 7 lemon tetra. I did have a betta, but he recently died from constipation/overeating because he was eating the floating flake food and then found out the catfish had sinking food.

I had had 5 panda cories, but three of them died and the 2 remaining were very timid and either hid, or froze. When I tried to get three more panda from my LFS, they had none and the owner said that he rarely gets them and doesn't special order. I got 3 laser cories.

Now the 2 panda swim all over the tank, but I hardly see the laser cories. The laser cories spend all of the time under the driftwood in the tank. So much so that sometimes I don't even know if they still exist. I am totally new to tropical fish. Is this normal behaviour? Are they happy? Is there something that I can do that could make them more comfortable in the tank?
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post #2 of 8 Old 04-03-2011, 08:30 AM
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I'm sure they are happy. I have a treehouse in my tank, and my albino and emerald cories love to hide in it. When I don't see them, I lift up my treehouse to find them looking at me. Maybe let some food sink to the substrate and they will come out to eat. If they show sickness, let a user named Lupin know. He's an expert.(Please don't ask me, I'm not good at diagnosing fish)
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post #3 of 8 Old 04-03-2011, 04:05 PM
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When were the 3 new corys added? Corys can often take days, even weeks, to "settle in." Providing hiding spots is good, and ironically, having several hiding places will calm fish more and they will be out and about more, than if they had no place to hide.

The Corydoras aeneus laser-stripe is very nice, I haven't seen them locally for a long time now.

And C. panda can be very sensitive, I have lost several over the years when first adding them to a tank, especially a newer setup.

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 #4 of 8 Old 04-03-2011, 04:10 PM
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I have three c. aeneus (green cory), that were super mellow for the first couple weeks. I assumed cories are just like that.

Suddenly, one day I noticed them frantically swimming, and they seemed to never stop.
I posted here, worried, and Aunt Kymmie spoke some wise words to me.

"A hyperactive cory is a happy cory."

I suppose the Pandas feel better that there are more cories, even though the new ones haven't settled down yet.

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post #5 of 8 Old 04-03-2011, 04:50 PM Thread Starter
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Originally Posted by Byron View Post
When were the 3 new corys added? Corys can often take days, even weeks, to "settle in." Providing hiding spots is good, and ironically, having several hiding places will calm fish more and they will be out and about more, than if they had no place to hide.

The Corydoras aeneus laser-stripe is very nice, I haven't seen them locally for a long time now.

And C. panda can be very sensitive, I have lost several over the years when first adding them to a tank, especially a newer setup.

Byron.
The 3 new cories were added about a month ago. The pandas were much more confident almost as soon as the new ones were introduced.

My laser-striped cories are orange striped. The pandas seem to be doing very well (let's hope I didn't jinx them lol).
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post #6 of 8 Old 04-03-2011, 04:56 PM Thread Starter
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Originally Posted by redchigh View Post
I have three c. aeneus (green cory), that were super mellow for the first couple weeks. I assumed cories are just like that.

Suddenly, one day I noticed them frantically swimming, and they seemed to never stop.
I posted here, worried, and Aunt Kymmie spoke some wise words to me.

"A hyperactive cory is a happy cory."

I suppose the Pandas feel better that there are more cories, even though the new ones haven't settled down yet.
I didn't realize that it takes some fish a while to settle in. When I peek at them under the driftwood, they swim else where in the tank and as soon as the wood is repositioned, they zip back under it. They do look healthy when I do see them. I do have a planted tank, but not too many plants since the tetras need a portion clear to swim across. I keep the front of the tank free of plants for them. I also have limited experience and limited supply places to get plants.
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post #7 of 8 Old 05-12-2011, 10:57 PM Thread Starter
Update.
It's a month since I first asked about my laser stripe cories' apparent shyness. Just a few days ago, I was feeding my tetras and lo and behold, my shy cories came out and started to look for food. In daylight! They have been doing this since.

They still only come out briefly when fed and flee if I move, but they look healthy. I'm so excited to finally see them swim around. Who knew that it would take them about 2 months to feel more secure.
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post #8 of 8 Old 05-13-2011, 09:42 AM
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Quote:
Originally Posted by brownmane View Post
Update.
It's a month since I first asked about my laser stripe cories' apparent shyness. Just a few days ago, I was feeding my tetras and lo and behold, my shy cories came out and started to look for food. In daylight! They have been doing this since.

They still only come out briefly when fed and flee if I move, but they look healthy. I'm so excited to finally see them swim around. Who knew that it would take them about 2 months to feel more secure.
Sounds normal, glad to hear all is well.

I have corys that I have had for years and they will still disappear when I enter the fish room. But if I sit quietly, within a few minutes they are back out and poking around. It is their natural instinct when "threatened" to either freeze or immediately flee. The more traffic around the tank during the day, the more they will stay out as they realize it is not a threat. But in my case my fish room is at the end of the house and only when I go in there do they see any motion outside the tank, so they react.

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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