ok
if you are gonna have all the fish in the same tank
introduce a 4-6" jar
not too big
jars grow pretty fast
and if the jar grows with the other fish then he might learn to live with them but its a guess again
i have read on this forum where a jar living with fish for loooong time has suddenly gone psycho and killed all the fish in the tank
but then again hope for the best and good luck
and do keep an eye on the 4" oscar they try to be the bully sometimes
if you are gonna have all the fish in the same tank
introduce a 4-6" jar
not too big
jars grow pretty fast
and if the jar grows with the other fish then he might learn to live with them but its a guess again
i have read on this forum where a jar living with fish for loooong time has suddenly gone psycho and killed all the fish in the tank
but then again hope for the best and good luck
and do keep an eye on the 4" oscar they try to be the bully sometimes
All the jars I have had, were ok in the community tank.....until they hit around 8-9 inches...then they all were........