Angle fish

Question
I purchased some 3 small angle fish about a month ago with 3 blind cave fish, and put them in my 70L tank. Now one of them has turned a slightly green (origionally silver and black). Is it sick? Should I be worried?

Answer
Hi David,
I doubt that your fish is sick,  Is it eating?  If so I don't think you have anything to worry about.  It will probably turn out to be a beautiful marble fish.  In the light, they have beautiful colours mixing in the black, and silver ...I wouldn't be worried..and it could be too, that two of them have become mates...check to see if the one that has green, hasn't already chosen her mate!  They can breed quite young, so maybe you have a couple there my friend.  Watch them closely...This fish might have it's nuptial colours, and when they do, they pull each other by the mouth, and they must be of equal force, or one will kill the other....so watch them carefully, and look to see, maybe you have a spawn somewhere in the aquarium!!
Hope this helps
Lynda