its not all about the size of the fish that makes it a monster![]()
size alone if it hit 24"+ and is carnivourse in some aspect. but their are alot of monsters imo that stay much smaller then that based on other aspects.
+1
So, applying quoted guidelines, we can conclude:
Not consider koi "monster" even if 3 ft long, because koi not carnivorous predator enough! Yet, some puffers quite small but still monster because so odd and so aggressive and poison so deadly!
BIG doesn't necessarily mean Monster. There are some fish out there that dont get very big, like no more than 10-12", but if you get stung or bitten, you will see what the true meaning of "monster" is.
You don't want to mess with a stone fish or a lion fish. Not "monsters' in size, just attitude and pain. Some African cichlids I have owned were true terrors. They would chase and punk fish twice their size.
Definitely agree that being a "monster" is not about size, but more about attitude.