dwarf neon rainbow fish

fishnewb

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I have three in my tank currently. I inherited the tank and the fish in it ... i've been noticing that they are hardly active during the day when i'm awake. they just kind of chill out at the bottom of the tank flapping their fins. but as soon as I turn the tank light off before I go to bed, this is when they're really active. is this normal for this type of fish?

also ... is it normal for their color to be off and on? sometimes they're really pale looking, and sometimes their coloring is vivid.
 

atmmachine816

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Is that it?

What are your tank stats, ammonia, nitrite, nitrate. How long have you had your tank, how big is it, are there any other fish? Hopefully we can figure out what is wrong with your fish or if it's normal. I personally have not kept rainbows but may be of assistance.
 
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fishnewb

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yes, that is them. I apologize for the lack of info but unfotunately I do not have test kits (I just ordered the aquarium pharmaceutical freshwater master test kit online).

I just set up the tank about a week ago, added nutrafin cycle/water conditioner, etc. the only reason I have fish in it so soon is because the fish and tank were given to me and I had nowhere else to keep the fish in the meantime. I know, it sucks.

I will post again when I have all of the correct info!
 

atmmachine816

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No it's quite fine. You seem to be doing what you can and that's good. I'm not an expert on fish disease so somebody with more expertise might be able to help you better. How big is the tank? Do you have a lot of plants for the neons to hide in?
 
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fishnewb

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10 gallon, and yes, lots of places to swim around and hide behind.
 

genie

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I had these fish once, and they lose color when they are scared or stressed. But they are more active when they think no one is looking, at lease in my experiences. They may be scared if you have them in a loud room, or if you have been moving things around in the tank.
It could be stress if the tank is high in ammonia or nitrite.
Also, good food helps keep the color.
 
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fishnewb

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thanks Genie. I figured the dullness was due to stress. I added some stress coat/water conditioner today.
 

susitna-flower

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Rainbow fish typically change color with the daylight around them. They also show color when 'courting'. So they will go from dull gray to brightly colored off and on all day. I have had 6 different kinds over the years and they all do this, unrelated to stress. However, they will be healthier, and happier all around if you try to cut the stress to a minimum. FIRST. when you can test your tank water, try to keep it as close to 0 ammonia and nitrite and around 5 nitrate. This will be how it looks when your tank is cycled, until then you will have to do water changes any time the stats move off at all. Until you can test, I would start daily 25% changes. Don't put in hot or cold water, or tap water without treating it for chlorine. Try to temper the water to be close to what you have for your fish.

What temp it it at? What kind of filter do you have? Do you have air stones? As a rule the smaller the tank, the harder it is to keep the water healthy for your fish. The SECOND thing I suggest is that you be very careful of adding more fish. Don't overcrowd. Good Luck.

Land of the Midnight Sun 8)
 

tan.b

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I have 3 dwarf neon rainbows and their colours are consistant, but their tank is cycled so aren't exposed to any stress. the boys flare their fins out occasionally when competing for the girls attention, but they occupy the whole tank and sometimes school together, sometimes go off and do their own thing like al my schooling fish do. they will shimmer more when sunlight catches their scales. wil try to help you more when we know your readings. mine aren't as active as the danios, they just swim about quite slowly rather than darting manicly like danios do, but they seem happy enough. they don't go mad at feed time either, but must be eating as they aren't skinny! they are so laid back - do everything in their own time!! hope yours are ok. flapping at the bottom can be a sign of high nitrite, but the way they perk up when you turn the lights suggests more behavioural than disease which is promising. do plenty of water changes if you're in any doubt as to their health using a dechlorinator solution and water of similar temperature. good luck
tan
 
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fishnewb

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ooh. an update! I did a 20% water change this morning and their color/activity has improved greatly! it's amazing I think I will continue to do this daily until the tank cycles.
 

tan.b

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fishnewb said:
ooh. an update! I did a 20% water change this morning and their color/activity has improved greatly! it's amazing I think I will continue to do this daily until the tank cycles.
horay! they are fab little fish!! tan
 

susitna-flower

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You have every sign of being a truly great afishionado. When you can just sense there is something wrong, and care enough to labor till they are happy! Great job!

Land of the Midnight Sun 8)
 
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fishnewb

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susitna-flower said:
Rainbow fish typically change color with the daylight around them. They also show color when 'courting'. So they will go from dull gray to brightly colored off and on all day. I have had 6 different kinds over the years and they all do this, unrelated to stress. However, they will be healthier, and happier all around if you try to cut the stress to a minimum. FIRST. when you can test your tank water, try to keep it as close to 0 ammonia and nitrite and around 5 nitrate. This will be how it looks when your tank is cycled, until then you will have to do water changes any time the stats move off at all. Until you can test, I would start daily 25% changes. Don't put in hot or cold water, or tap water without treating it for chlorine. Try to temper the water to be close to what you have for your fish.

What temp it it at? What kind of filter do you have? Do you have air stones? As a rule the smaller the tank, the harder it is to keep the water healthy for your fish. The SECOND thing I suggest is that you be very careful of adding more fish. Don't overcrowd. Good Luck.

Land of the Midnight Sun 8)
thank you for all of your advice!! very helpful. my tank is currently at a temp. of about 25-26C. I have an aqua tech filter 10-20, it just came with the tank. and I put in an air stone on the opposite end of the filter.



susitna-flower said:
You have every sign of being a truly great afishionado. When you can just sense there is something wrong, and care enough to labor till they are happy! Great job!

Land of the Midnight Sun 8)
thank you!!
 

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