When spawning time comes, one or more pairs will form and spawn, in which case you won't have to worry about pulling each fish out to vent them. 7 oscars gives you good chances for one or more pairs, especially in an 11 foot tank.11'x5x2.5.
Thanks.
Say I had 7 Oscars in a large enough tank.
Will be able to vent all the fish in the tank when spawning time comes? Can the females that don't spawn be vented?