I have 3 lince cf .
1 is a 16incher , the other two are babies and just came from brazil at 8” three months ago .
i put the two small ones in the same tank as the bigger lince when they first arrived . This lasted for 2 months and i habe separated them for a month now because the tank was getting overstocked with 10 ish atlantic tarpon growing fast and they kept interrupting and spooking the small linces when they are trying to feed .
all three linces was completely unharmed no chipped fins whatsoever . To add more details , all my three lince are from brazil not Peru.
A bit out of topic but i heard the brazil ones are reported to reach bigger max size .
i have a friend who had kept multiple peru lince ( all about 15-18”)in the same tank like 5-7 or so, most died not because of the damage done by each other but due to being spooked and ended up banging the tank wall killing themselves . He still has the video up in his IG , Dm me if anyone happen to need it .