you can find octopus by kerning city. they are in the construction site
Since octopuses live in rocks and such they will find a lot of fish hiding from their predators.
At Ludi
pretty much anywere in maplestory near hennnesys..... many places
The game has a preset spawn pattern which will only keep a certain amounts of monsters onscreen at a time. If there are very little monsters onscreen, there must be a platform somewhere on the map that is FULL of them. Find it and kill them and you'll reset the spawn.
At Ludibrum
In Sleepywood dungeon
internet
my bum :)
You can get them from Mushmom and Mushmom's Grave.
Henesys
You can't.
in the woods and the dark lair