First off is my Hoplias malabaricus (common wolf fish), currently only 6" but it will not tolerate any tank mates at all. He resides in a 48x18x13 - 50 Breeder.
Next is my Erythrinus erythrinus (Red Wolf Fish), he lives in a 55 gallon by himself and I'm looking into a tankmate or two for him, I'm growing out some Senegalus and looking for a wicked pleco.. going with either the L024, L025 or L091. The first link is a video on youtube of him. There are more in my youtube account.
Next are my Dovii, the male is only 5.5" and still fairly bland but the female has great coloration and is at 7". They spawned one time and ended up eating the eggs but they were fertile.. Ever since she has wanted nothing to do with him and they have been divided ever since, she will not tolerate any tank mates except for him when they spawned.