Cory Strangeness

[aaronc]

On thursday I added 6 cories to my newly cycled tank along with 8 congo tetra and 4 clown loach.

Sadly I lost one cory last night, he had a red mark under his skin, not sure what it is.

So now I have 5. After losing one I am bit worried about their behaviour.

Basically they are going mad, shooting up and down in the tank, dancing around each other and playing about in the filter flow (one actually swam into the filter outlet tube, soon gone blown back into the tank lol). The clown loach are joining in to.

I have done a full set of tests and all the results are fine so I dont think it is a water issue.

I am just curious as to whether this is normal behaviour in cories, as all the ones in the shop just sat on the bottom of the tank.

I hope its normals behavious for happy corries, as its very fun to watch

Thanks
Aaron

 

[chardonnay1000]

my cories love to play in the filter flow, and they do go a bit crazy, dont worry about them sitting still for ages on the bottom either, mine do it all the time. Sorry to hear about the other little one.

 

[CorysRusUK]

what kinda corys are they and did you add ALL those fish at the same time? Also, how big is the tank ?

 

[aaronc]

Hiya

They are bronze corys. I did add them all at once, however I did do a full fishless cycle as per this thread 'fishless cycling'

The tank is 125 litres

Aaron

 

[chardonnay1000]

it does say you can add your full bioload of fish after a fishless cycle so the loss of your cory could just have been the stress of moving house. im please to see you have plans to rehouse your clowns when they get too big, they are lovely entertaining fish, you have picked a lovely selection of fun to watch fish

 

[richchappy]

yep corys are just mental, thats probably why i like them so much lol, nothing to wory about, and they the clowns must think there big corys awwwwww

 

[Barracuda518]

On thursday I added 6 cories to my newly cycled tank along with 8 congo tetra and 4 clown loach.

Sadly I lost one cory last night, he had a red mark under his skin, not sure what it is.

So now I have 5. After losing one I am bit worried about their behaviour.

Basically they are going mad, shooting up and down in the tank, dancing around each other and playing about in the filter flow (one actually swam into the filter outlet tube, soon gone blown back into the tank lol). The clown loach are joining in to.

I have done a full set of tests and all the results are fine so I dont think it is a water issue.

I am just curious as to whether this is normal behaviour in cories, as all the ones in the shop just sat on the bottom of the tank.

I hope its normals behavious for happy corries, as its very fun to watch

Thanks
Aaron

When you say "red mark" in the skin, that sounds like a bacterial infection. Do any of the other cories have any red spots on the skin?

Like everyone said, the buzzing throughout the tank is normal. That will stop as they get older.

 

[PC1963]

In your case adding new corys in new tank and next day one died.

Possible 1. New fish can't adaping or adjusting new water paratameter [pH change too fast from original enviroment], [temp change but not big issue]
2. New fish may have bacterial infection and when change to new water parameter[can't adjust and immune system weak], and may cause of death. Even you see all the fish were active when you
release them [looking healthy] but the weak fish will not make it.
3. Red spot is usually indication of bacteria infection [internal infection].

Water change or medicate the fish would be help, if your 5 corys still healthy and alive there is no need medicate. Water change weekly would be help for better enviroment.

 

[aaronc]

Hiya

All the other corys, and other fish are fine. I have done a 20% water change, ensuring the temperature and PH match.

I will keep an eye on them for the next few days.

Thanks
Aaron

 

[Sibelius]

Just check that their is enough oxygen in the tank too, do you have live plants?