If it was me and the pond was their forever home, I'd leave only RTC, niger, and pacu in that pond out of this list (even niger is questionable as pacu may bite their fins). An experience based choice. All others would be eaten or attempted to be eaten sooner or later by the RTC, even TSN and marbled Pim (unless you get lucky and your RTC(s) are male(s) and are not of good genetics, failing to exceed 3'). Just food for thought and more reading, if you willed.
I'd say about the same as RTC or TSN of the same size. Hybrids take after the traits of the maternal species the most and TSNxRTC is more like TSN than RTC. It's like a more bulky TSN. But the mouth size is a wash for our purposes, I'd posit.
Doradids and pimelodous (pictus, ornate pims, tsn, red tails, vultures, etc) are my favorites. I also love the giraffe cat family.
It was a trade in at a local fish store. I have never been abled to identify it. It must be some type of giant syndontis species. Hopefully some one can id it because I'd love another one.
