Manu, so you want a trigger, angle, and a eel? That might be over clowding the fish a bit with LR in there too. You will need LR when you have a eel, d with those other fish you want(IE:trigger and angle) there might not be enough room. I would say get the trigger and eel, or angle and eel, or trigger and angle, there simply not enough room for them all to fit, they do grow...ALOT and when they get bigger, are you planning on putting them in a bigger tank? If so, get all 3(small),and when they get bigger, switch em to a 100 gallon. Hope i helped!