Freshwater fish turning yellow? - Tropical Fish Keeping - Aquarium fish care and resources
LinkBack Thread Tools
post #1 of 4 Old 09-17-2007, 11:05 AM Thread Starter
New Member
Freshwater fish turning yellow?

We have a recently established freshwater tank (30 gal) with biowheel filter, aerator, etc. We cycled the tank for about a week before adding fish, and it used to house goldfish with its previous owner and was never quite dried out before we replaced the water and cycled it to start our tank.

We don't have anything overly complicated in there (two mollies, a few neons, tiger barbs, and a couple of zebra danios). The problem is that one zebra danio has began to turn yellow where they all used to be white. I've done a little googling of danios and apparently it's normal for them to have yellowish coloring--but I am worried because the rest of them don't seem to be having the same issue. Also, we have a white molly with big fins, and the tips of it's fins seem to be yellowing as well. I am wondering if this is something i need to worry about and if so how to rectify the situation. Thanks for any help you can give.

Lindsey is offline  
Sponsored Links
post #2 of 4 Old 09-17-2007, 11:56 AM
Falina's Avatar
What are your water parameters Lindsey? You should get a liquid test kit if you can and test for amonia, nitrite and nitrate. What did you use to cycle the tank? It seems unlikely that a tank would cycle in a week. 4-6 weeks is more common. It seems to me that your tank is still cycling which may be why the fish sem discoloured.
Falina is offline  
post #3 of 4 Old 09-17-2007, 03:49 PM Thread Starter
New Member
I actually tested the amonia, nitrite, and Ph today with liquid kits and all came up normal. I am not sure about the nitrate. thanks for the insight about the cycling, I hope that the fish end up doing okay!
Lindsey is offline  
post #4 of 4 Old 09-17-2007, 04:33 PM
fish_4_all's Avatar
It could be an adaptation to the color of your substrate. What color is it? Other than that I have never heard of yellowing in a fish like that except for normal coloration.
fish_4_all is offline  

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Forum Replies Last Post
Turning a Freshwater Tank into Saltwater Highland lake13 Beginner Saltwater Aquariums 3 12-10-2009 09:45 PM
Silver/White goldfish turning yellow??? rae3988 Tropical Fish Diseases 54 02-14-2008 10:07 AM
new tank, one fish turning yellow. i like fishes Saltwater Fish 11 04-03-2007 06:01 AM
gravel turning yellow?` paisley_tele Beginner Freshwater Aquarium 4 12-11-2006 06:05 PM
Our New Yellow Show Tang is Turning White Michael Saltwater Fish Diseases 24 11-19-2006 01:44 PM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome