Today I found my small Gold Gourami on the bottom of the tank. I really had to look since he is wedged in tight along the wall behind some plants. I do a head count of sorts each morning and this morning, I didn't see my little Gold. I just lost my little Blue Gourami this week as well. It isn't water parameters, I think it is Big Bertha, the large Gold Gourami. He/she is a crab apple and chases the others around the tank. I had a brief moment of wanting to flush her today. (don't worry, I would never do that)
How in the world do the rest of you keep multiple Gourami? Now I am nervous about my other Blue Gourami. He sort of keeps to himself in the plants but on occasion has been chased. The only trouble maker I can see in this tank is the Big Gold. I really don't want a tank with only 1 fish in it so I am not sure what I am going to do.
I am just so sad. I managed to keep my fish alive through my cycle, didn't have any issues when first introducing any new fish and now Bertha is getting out of hand. To be fair, I didn't see her kill the other's but she is the only one that chases them. All the other fish seem fine (no disease) so I think all the evidence points to the bully in the tank.
Any suggestions short of flushing her or adding a bigger meaner fish will be considered.