dwarfgourami
Fish Connoisseur
I still think it would be helpful to know the footprint of the tank - since cochu's are very active they need enough space to be active in, otherwise they will get spooked. Also, as soon as you can, the water stats, as that is another factor that is likely to be relevant.
And almost certainly, the lack of a school is another factor influencing the fish's behaviour. This is of course a problem when you come to the end of a school-sooner or later you are going to be left with a sole survivor; our concern is to make sure it is not sooner than the fish's natural lifespan.
And almost certainly, the lack of a school is another factor influencing the fish's behaviour. This is of course a problem when you come to the end of a school-sooner or later you are going to be left with a sole survivor; our concern is to make sure it is not sooner than the fish's natural lifespan.