sick tank

Hi All, To be perfectly clear I am brand new to the hobby so I could be completely wrong, but I think this Tank and fish have been neglected. I need help preparing myself a little priority-wise for helping this ecosystem. So please help me identify with the photos I have provided any problems...

Hello All. Let me apologize. I’ve been lurking in the background, reading posts on R2R for several years now. I’ve learned a lot from the discussions. Thank you all for sharing what you know with newbies like me! I’m not much of a talker…and I don’t feel I’ve gained enough knowledge to help...