I have kept the 3" rainbiw sharks with my 1.5" lemon tetras and 2" gold barbs for almost a year already with no problem and aggression.
I change 30% of the water weekly and I vaccum the gravel.
Few days ago I added a baby 1" flowerhorn and the rainbow shark became so aggressive and chase the flowerhorn, he also chase the other fish also. At first I thought a little chasing wouldnt be a problem.
Then next morning I found 3 lemon tetras dead with no bodies and tails.
I dont know what the problem is so I thought it might be the water, so I changed 30% of water and added aquarium salts and turn up the heater.
At night the other 2 gold barbs are dead. Then the next morning the other lemon tetras and the other gold barb are dead also.
In 3 days all the lemon tetras and the gold barbs are dead.
Since all the fish are dead and remain the baby flowerhorn only. The rainbow shark constanly chasing him now.
I wonder whats wrong with the rainbow shark all of a sudden?
I change 30% of the water weekly and I vaccum the gravel.
Few days ago I added a baby 1" flowerhorn and the rainbow shark became so aggressive and chase the flowerhorn, he also chase the other fish also. At first I thought a little chasing wouldnt be a problem.
Then next morning I found 3 lemon tetras dead with no bodies and tails.
I dont know what the problem is so I thought it might be the water, so I changed 30% of water and added aquarium salts and turn up the heater.
At night the other 2 gold barbs are dead. Then the next morning the other lemon tetras and the other gold barb are dead also.
In 3 days all the lemon tetras and the gold barbs are dead.
Since all the fish are dead and remain the baby flowerhorn only. The rainbow shark constanly chasing him now.
I wonder whats wrong with the rainbow shark all of a sudden?