Sterbai cory's not schooling. - Tropical Fish Keeping - Aquarium fish care and resources
 
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post #1 of 5 Old 01-29-2013, 04:10 PM Thread Starter
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Sterbai cory's not schooling.

I have 6 Sterbai Cory's in my 75g tank and they're not as active as the first few days I had them. This past Sunday I found one dead under a piece of driftwood and since then they all seem to be loners just laying on the sand by themselves. I've had them about a month now and I'm a little concerned something may be wrong. I do plan on replacing the 6th one but just haven't had time to get to my LFS. Any help is appreciated.

10g - Red Cherry Shirmp
20g long - SE Asia "Biotope"
30g - Jasper's (GF) Tank
75g - South American "Biotope"
Plenty of empties...
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post #2 of 5 Old 01-29-2013, 04:17 PM
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Cory's Lossly shoal - the shoal but not as a tight group. Thats what I found my my cories - It's pretty normal for me :D

540L/140G - 'Tidal Jungle' (Crabs) | 254L/67g - 'Backwater Pool' (Fish/Snails) | 96L/25G - ''Twisted Minds" (Fish/Snails)

I've never had any problems with 'Impulse Buying'. They're just animals that I forgot I had planned to get.
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post #3 of 5 Old 01-30-2013, 11:42 AM
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If they are laying on the sand, there is trouble. Are they upright, or on their side slightly? What is the respiration rate?

As for shoaling, a cory will be relaxed if it has other corys around it in the tank. They may or may not swim around in groups, or in a species. I have over 30 corys in my 115g, representing 12 or so species. Some are out and about all the time, singly, in twos, threes; some are together (as a species) more than others [could be just 2 or 3 of the species group of say 4 or 5]; some chum around cross-species; others are always "alone" exploring.

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 5 Old 01-30-2013, 01:46 PM Thread Starter
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All of them are always upright and as far as respiration it seems normal. If one Cory swims by another one that one will follow. My LFS owner said that this is normal. Just wanted other opinions.

10g - Red Cherry Shirmp
20g long - SE Asia "Biotope"
30g - Jasper's (GF) Tank
75g - South American "Biotope"
Plenty of empties...
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post #5 of 5 Old 01-30-2013, 07:01 PM
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Quote:
Originally Posted by Stoke88 View Post
All of them are always upright and as far as respiration it seems normal. If one Cory swims by another one that one will follow. My LFS owner said that this is normal. Just wanted other opinions.

Yes, that sounds fine. They need a rest now and then, and they are quite active during total darkness too. Many of mine I only see at feeding time; otherwise, they are in behind chunks of wood and plants, resting I assume.

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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