I have kept hogaboomorum and found them to be similar to all the other large growing amphilophus. Lyonsi is probably the least aggressive, my hogaboomorum beat the crap out of a similar sized lyonsi. But it left all the other cichlids in it's 6 ft tank alone as i remember, even had a chancho in there and it didn't care. Just didn't like that male lyonsi.
Any experience with Trimaculatus?
