Help my fish is dying and he’s not old I just have him aquarium

can someone help me?? my panda cory catfish seems to have an

This has happened to one of my mollys can someone help.I it a

So I’ve just lost a guppy and my other two have got white spots

Update on my Oto. Look at his belly and he’s barely moving.

Pls help it’s a emergency

Oto help

Please help

Fish down, help!!

Help my Tin Foil Barb!

Need help with my Oto.

help, how can i treat him ?