Hi, I wonder if anyone can help me, at the moment I have 65 little fry, they are about four mouths old. I think they are stating to get there colours although I am not sure. They have splashes (like lines and dots) of orange/red on their fins, tails and under there chins. However the colour is so striking and strong, it almost looks like blood, like they have been having, but if they have I haven’t seen it. Please can someone help me in these matter I would be very grateful. The tank in question is 40L and has five fry in it; the fry are about 1/2inchs and under.
Thankyou.

Hi Helen, the first thing to do is check your water. Fry are very sensitive to water quality (as I've come to learn). Also are you able to take a pic of the affected fry?

No sorry no pic, erm but i know that the water is fine; they were cleaned only a day ago.

Have you tested it? We need to know the stats for ammonia and nitrites

We need to know the stats for ammonia and nitrites? how do i do that?

Go to your LFS and buy an API freshwater master test kit which contains everything you need to test your water or take a water sample from the tank to the LFS and ask them to test it and write down the results don't take they are fine as an answer then post results here

In long run its best to have your own test kit as weekly water testing is important in maintaining good quality water.

What does a fry look like when it is getting its colour? and does the orange/red apper first?

Ok my dat did the water test,
Temp - 68°F to 74°F.
Ammonia - No Trace.
Nitrite - No Trace.
Nitrate - < 20ppm.
pH - 7.2 to 7.6
GH - 8 to 15.
KH - 5 to 12

wow i didnt even know about checking water...i thought if its clear and clean its good
.....anyway congrats of the lil ones