though you might get a few nice fish once in a while, its better to give people the temperament that they're known for, not the temperament that they might have.
So true...
dbanner not sure if your taking this on board but its worth it.
Though i dont want to see your source as it may violate forum policy just want to clear up a source of confusion that you may have found. Heros Severus the true mouth brooding Severum gets to about 8 inches though there are variants that get bigger. IMO they need at least 60 gallons or more rather than a 40.
However the common Green Severus is called Heros Severus which is a common mistake as the Green Severum is H.Efasciatus which DOES grow to 10 - 12 inches depending on strain, gender and upbringing.
The only time I can think its acceptable to use a 40g breeder for Severums is for the purpose of breeding in a fish house - which is common but this is only for a few weeks at a time rather than long term captivity.
Either way Severums are big fish and big fish = big tanks.
Really sorry to the OP for ranting in here.
There are some really great suggestions in here like the Sajicas and Rainbows
Wills