hello, i am have trouble with 3 of my fish. One of my deformed golden barb has his lower jaw/lip spilt into two movable parts. His mouth is red and each movable section has a white growth on it (attached pics). I have no idea what happened. His tank mates in the 55 gallon is another deformed golden barb (smaller than him), 2 black skirted tetras, 6 white skirted tetras, 1 large mystery fish (looks like a deformed 3inch long
neon tetra), 2 small gold fish (under 3 inches), and 2 medium size common plecos (under 6inches). Oh and all of these fish have been living together for atleast 3-5 years. I got the 55 gallon with fish, water, heater, air pump, gravel, filter,decorations, and everything for free about 2 months ago. Nothing has been change since i've had it. The golden barb only developed this about a week ago.
The problem with my female guppy is that her mouth is stuck open and it lookes like a section of it is sunken down. I am also attaching pics but it's hard to see it because of her coloring, zoom will be necessary. She is in the 20 gallon with one other female guppy, a snail, 2 panda cory cats, and 7 neon tetras. It is also in this tank that i have a neon tetra who has the so called "whirling disease". Any help will be greatly appreciated!
Last time i checked all readings in all tanks were good.
mystery fish(pic one)

golden barb(pic two)

comparasion with the other golden barb(pic three)

guppy pic one(pic four)

guppy pic two(pic five)
