my jag has decided now he does not like anything in his domain, attacks anything that moves including, my syphon,me,malaysian trumet snails, tanks infested with the little buggers
i actually just bought 20 baby jags. after a week i brought a 4" pleco from the quarentine tank to theirs and they were fine at first with it. i checked after 10 minutes and all except 5 were staring at it. seriously like 1.2-3 " away. 20-30 minutes later the pleco was dead. the baby jags are still under 2.5" so u be the judge
it's more footprint size than anything. A 14-15" male jaguar in a 4'x18" (75-90) doesn't have alot of space to swim. a 6'x18" gives much more space it to thrive (125-150).
Females grow between 11-14" so they could be off fine in a 75 4'x18".
all my females was the aggressive ones, it was more often than not the females that would bully the males, apart from breeding time.
I had my breeding pair in a 75G for a long time, male 13inches - female 9inches, they had enough room but I did up grade as more room was nice 4 them to have, I up graded 2 a 120 bow front.