Yes, a week back I’ve added 3 fish similar size(after quarantine) too reduce some time for the maintenance in my fish room
Same day the 3 fish were looking bad so I quickly removed them and treated tbem(they are all fine and in a separate tank now). These guys never showed any signs after a week they all turned darker (but eating) next
Morning I saw one lying flat I treated the tank (but couldn’t do a water change as I’m heading out) returned home and yeah saw him dead. I tested the tank with pp and big water change same tbing next day and now they are all back and doing great!
Thank you Pat. It sucks to lose fish this way, but this was my fault. I’m hoping it’s not the biggest fish i see others pretty big size. I’ll try to measure my 8 fish tomorrow (I lost 1 on DOA)