Minnow help :)

[FishyFleet]

Hi there. I am new to this site and just needed some advice on my Minnows please.
I have a Biorb containing 3 x coldwater goldfish/blackmoors and 3 x Minnows.

They have all lived together for about a year bar one of the Blackmoors which was added over 2 months ago.

I have just noticed that 2 of the Minnows are looking rather dark in colour compared to the other and also very thin whilst 1 of them is a healthy size.

Could there be something wrong with the 2 darker thinner Minnows?

[chrisfraser05]

2 of my 6 minnows are like this, have been for as long as I remember.

Its more likely that the other 2 are just fatter and lighter, maybe carrying eggs?

Chris

[FishyFleet]

Ok thanks Chris. Aslong as they are healthy that's all that matters. Just seemed strang as they were lighter in colour recently. Will keep an eye on them:)

[KatzeSlaugen]

unless the bioorb is very large, and the largest ive ever seen is only 16gal, you are way over stocked. it could be due to unhealthy water parameters. do you have a test kit to check your water parameters?