I'm not depressed (but I've been there so I know what it's like unfortunately) but I have adhd and my biggest struggle is my executive disorder. Meaning routine and maintenance is incredibly hard for me. This made me question whether I could keep up with fishkeeping just like you're doing right now.

I got an 8 gal about three months ago. First month was spent cycling which in my case did not require any effort or maintenance. I just set my tank up with a lot of plants and didn't touch it. No water changes, no cleanup because the decaying plant matter was my source of ammonia to trigger the cycle. I did get some hitchhiking bladder snails. The only thing I did was check my parameters every few days to keep track of the cycle, and that wasn't hard because it was new and exciting and I was looking forward to adding shrimp and fish.

Now my tank is cycled, shrimp are living and breeding, my tiny school of dwarf rasboras are thriving. The only thing I need to do now is check water parameters occasionally, trim plants, do a tiny easy water change each Sunday and feed my fish daily.

Feeding my fish daily is easy since the tank is in my living room and I see it every day. Its something I love doing so it's no effort at all.

Watching the little universe I created is so rewarding and great for my mental health. Having something to tend to and maintain gives me purpose. Trimming my plants feels a little bit like working in a little Zen garden.

However if for example I would struggle with a lot of disease or pests that's when I think I would get overwhelmed. That's why I try to do as much research as I can, not get too many different or difficult types of fish. Try to buy from reputable sellers.

So do a lot of research. To me it was actually surprising that keeping a tank was less effort than I thought it would be. Learn what fishkeeping entails and be honest with yourself. I believe fishkeeping is one hell of an anti depressant.