Four fish is too many fish for a 10g, I think I've said this before. When did you get a firefish?
In a 10g, you can have 2-3 well-chosen species. Both the firefish and the falco are more stationary perchers/lurkers. A fight was inevitable. The falco had established a territory and the firefish invaded it. Logical behavior.
Congratulations on reaching the 6 month mark. But, young grasshopper...
6 months is not stability. 6 months is better than 3 months, but not better than 12, which still isn't better than 18 months or even 2 years.
The most crucial time for a tank is between 9-12 months. I'm currently on pins and needles as one of my systems is about to pass that mark. When it passes that mark, I'll be much more happy.
L
In a 10g, you can have 2-3 well-chosen species. Both the firefish and the falco are more stationary perchers/lurkers. A fight was inevitable. The falco had established a territory and the firefish invaded it. Logical behavior.
Congratulations on reaching the 6 month mark. But, young grasshopper...
6 months is not stability. 6 months is better than 3 months, but not better than 12, which still isn't better than 18 months or even 2 years.
The most crucial time for a tank is between 9-12 months. I'm currently on pins and needles as one of my systems is about to pass that mark. When it passes that mark, I'll be much more happy.
L