gourami colours

Hello fish community! I have 4 honey gouramis that I have had for almost a year now and two are turning black. They sort of looked like they rolled around in mud, it’s covering their fins and body. One looks more black then the other but I want to make sure this doesn’t spread to any other...

Hey guys. I was wanting to upgrade my filter because I feel like it would be a great benefit for my fish. Currently, I have a Golden Gourami, a Flame Gourami, a Rose Barb, and 2 guppies. I currently have a TopFin 20-gallon hexagon tank...

I recently purchased two blue dwarf gouramis as a pair, for my new tank. The male is definitely a male, with bold red stripes....but the picture here is supposed to be the female. From the pictures I've seen on the Net, the female should be blue-silver and presumably not have any red markings...