EW! I had one of those in my 110, all he did was harass everyone! It took me a few tries but i got him. after weeks with trying with a net!
2 liter pop bottle rate at the top (the neck of the bottle) and where it meets the full diameter middle. I cut it with knife almost all the way around so the top of the bottle bent and opened fully , but still enough plastic to keep it attached. Cut 2 holes beside each other on the top and the Middle section and put fishing line through the top part and then tie to the middle section, so when it was in the water the flap was open; then pumped the bottle with food, but when you yanked on the string straight up it pulled the lid down tight onto the bottle and lifted straight up. Took me 3 tries. first one broke the fish line and third caught the bastard! pulling it out of the tank he jumped and fell behind the tank. Needless to say I couldn't reach him with a net, so a day later the shop vac sucked him up haha..
the spear method would be awesome... my girlfriend did not approve tho hahah
Good luck