I’ll be so grateful if someone can help. We got a tank 2 months ago. Friendly tropical fish - guppies, platys, danios and 2 dwarf gouramis. Noticed a bit of redness on the female dwarf gourami. From yesterday to today, she’s gotten really sore and I can now see the male platy and the male gourami getting quite aggressive with her.
I’ve attached a picture. Could anyone help if that’s a bite or an infection. And in either case, can I do anything to help it?
Thanks!