I just love them to death
They show a lot of character and they feed very differently from their tank mates, Aequidens sp. Janero Herrera and Heros sp. red shoulder.
My Aequidens stay at the surface and just slurp in whatever falls there. The Heros moves slowly upwards and suck a little pice at a time. The ornatum hold 10-15 cm under surface and glance up to the food and very very quickly pushes up to snap the food with a huge splash. The kids love it and yeah me to
I have some thoughts on the Aequidens since the male is very dominant and disturbs the spawning for the ornatums by placing himself in the middle of the pair in their prepared area making it impossible for them to get in the right mood I feel. Not sure what to do with that actually.
I keep 4 or these and a pair each of the other ones in a 936 liter tank with BTN modules. I have pretty high flow of water. One external filer 1900 l/h + 2 in the modules of about 1250 l/h. Not really suitable for apistogrammas bu these fishes seem to enjoy the stay.
I exchange water every week with about 200 liter each time and every fourth 50% of the tank. I have a pH of about 6,5 once settled. It starts at 7 and drops due to lots of wood in the tank I guess. Nothing actively is done to change pH or other parameters.
I have som crinum plants which grows well.
Yeah I guess that's about it.