Pearl gourami both losing colour

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Airecl

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hi all

I have a 230L tropical tank at 25C containing:

13 x glass catfish
8 x neon tetra
6 x bronze corydora
2 x Pearl gourami
1 x giant African fan shrimp

Had set up for 6+ months fully cycled etc. Got the shrimp last week and heā€™s disappeared. Been looking for days but havenā€™t seen him!

Other than that everyoneā€™s been fine until today when both my pearls (male and female) look like theyā€™re losing their colours. Black line gone pale and dots fading. Acting normal enough though no obvious change in behaviour.

Everyone else seems normal too.

Water:

25-30% change each week
pH: 6.5
GH: 4d
KH: 3d
Ammonia: 0
Nitrite: 0
Nitrate: <20ppm
No chlorine/chloramine in the water either

Any ideas?

Thank you
 
Also Iā€™ve not added anything new to the tank apart from the shrimp and the other fish have been in there for months.
 
Can you post a picture of the fish?
If the image doesn't fit on the forum, change the camera's resolution to its lowest setting and take a few more pics. Check them on your pc and post a clear picture on here.

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Do a 75% water change and gravel clean the substrate every day for a week. See if that helps.

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Stress from tank lights coming on when the room is dark can be an issue. Fish don't have eyelids and don't tolerate going from complete dark to bright light (or vice versa) instantly. Most fish will fade when the tank lights first come on.

In the morning open the curtains or turn the room light on at least 30 minutes (or more) before turning the tank light on. This will reduce the stress on the fish and they won't go from a dark tank to a bright tank instantly.

At night turn the room light on and then turn the tank light off. Wait at least 30 minutes (or more) before turning the room light out. This allows the fish to settle down for the night instead of going from a brightly lit tank to complete darkness instantly.
 
Can you post a picture of the fish?
If the image doesn't fit on the forum, change the camera's resolution to its lowest setting and take a few more pics. Check them on your pc and post a clear picture on here.

-------------------------
Do a 75% water change and gravel clean the substrate every day for a week. See if that helps.

-------------------------
Stress from tank lights coming on when the room is dark can be an issue. Fish don't have eyelids and don't tolerate going from complete dark to bright light (or vice versa) instantly. Most fish will fade when the tank lights first come on.

In the morning open the curtains or turn the room light on at least 30 minutes (or more) before turning the tank light on. This will reduce the stress on the fish and they won't go from a dark tank to a bright tank instantly.

At night turn the room light on and then turn the tank light off. Wait at least 30 minutes (or more) before turning the room light out. This allows the fish to settle down for the night instead of going from a brightly lit tank to complete darkness instantly.
Thanks Colin, Iā€™ll try to get a pic of them ASAP as theyā€™re both a bit skittish. Iā€™ve got an auto light that does sunrise to sunset and it is gradual, but Iā€™m not sure whether itā€™s still started stressing them out. Could be the light in the room as we have had it replaced quite recently and it is very bright! Will make sure to avoid it as much as possible.

I canā€™t think of any changes other than the new shrimp in the tank - Iā€™m worried I canā€™t see him at all despite doing a full search?

Will give the tank a good clean as well and hopefully thatā€™ll help.

Thanks!
 
If the fish are acting nervous and skittish it is normally a water quality issue. Do a big daily water change each day for a week and see if it helps.

Make sure you have a picture on the back of the tank.

Make sure you have some floating plants in the tank.
 

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