My danios are weird...
I am a new(ish) fish owner and have had my fish for a few weeks now. My tank is 190l (second hand) and I have 4 platys, 4 black widow tetraa, 3 amano shrimp and 4 Danios.
When I purchased my danios, they were a healthy weight and quite slender, but now one of them (a golden danio) has had swellings in the stomach for a while.
I have not been overfeeding them, I keep watch on how much they eat (I feed them Daphnia and am about to add bloodworms to the mix, both frozen)
They have no problems swimming nor do they have problems eating, but they (as in the danio) has become a lot more shy and stays low.
I have done water tests regularly, as I always do, aswell as changing 10% of the water every couple of weeks.
There are no obvious problems, and the other fish are getting on as usual.
I think it is a pregnancy, and I am scared it is.
Extra note: I don't know the gender as the store never told me
I'll be happy to give out more information if you need it