This is something we have had issues with, mainly with our larger catfish.
Yestersay, I tried to place an 8 inch female Oscar into our 210 gallon that is home to our RTC that is pushing 19 inches.
It turned out poorly for the oscar...
We have tried holding the new fish into the sump tank getting all the fish used to the new smell, doing a water change before hand, feeding before hand... adding mutable fish at the same time.
Once our RTC gets it in his head that the new guy is new... he will kill and eat them. Same with our tiger shovel nose cats and our peacock bass.
This becomes an issue... We have to be able to move fish around due to sizing and temprament. Our RTC lives with 6 other fish and they are not even really a snack if you sized them up. But, because they are long time tank mates, zero issues. Our black shark will swim with in 2 inches of our red tail's mouth while the red rail is hunting! Zero issues.
New fish?
If it takes a week, our RTC will eventually hunt them down and eat them.
Thoughts on introducing fish into large predator tanks?
Yestersay, I tried to place an 8 inch female Oscar into our 210 gallon that is home to our RTC that is pushing 19 inches.
It turned out poorly for the oscar...
We have tried holding the new fish into the sump tank getting all the fish used to the new smell, doing a water change before hand, feeding before hand... adding mutable fish at the same time.
Once our RTC gets it in his head that the new guy is new... he will kill and eat them. Same with our tiger shovel nose cats and our peacock bass.
This becomes an issue... We have to be able to move fish around due to sizing and temprament. Our RTC lives with 6 other fish and they are not even really a snack if you sized them up. But, because they are long time tank mates, zero issues. Our black shark will swim with in 2 inches of our red tail's mouth while the red rail is hunting! Zero issues.
New fish?
If it takes a week, our RTC will eventually hunt them down and eat them.
Thoughts on introducing fish into large predator tanks?