Bought 8 yellow labs when I first set up my 90 gallon tank. Well as they've grown I've noticed 6 of them have black on their top fins and varying amounts of black on other fins. However, the other 2 have zero black, they are just all yellow. Also, these 2 seem to be a bit smaller then the others.
So, is this just variables within labs or could I have 2 impostors in the group?
So, is this just variables within labs or could I have 2 impostors in the group?