Can I try a Sveni and rapheal cat nowing that the pike might kill the cat? Or is there no chance of it working out?
All pikes become owner responsive in time.... The barbs are fairly large, and deep bodied, so they might be alright with the sveni for a while, but eventually they probably will get eaten. Keep them in at least groups of six, the larger the group the better. That way they will take all their aggression and nippin out on each other instead of on the other fish in the tank...
You should try bueno aires tetras, they are longer bodied, and grow larger...
. Most tetras are gonna be labeled as food though, or barbs. It can get annoying constantly replacing them though, so maybe investing in a type of silver dollar...black bar, red spot, red hook, common...or something along those lines might be a better idea.