L25 get pretty big, about 18", and can be v. territorial when older, and a reasonably agressive pleco. you'll need to keep it with other large plecos, and plecos that wont be outcompeted for food (out bullied). a lot of space and plenty of places to hide will suit, so both have a retreat (you should about double the available hiding places for each fish). although carnivore, they are not predatory to kill other fish for food, unless it is really lacking in protein, in which case they do sometimes suck on other fishes to get their slime coat, which usually will end up in a dead fish. but if you keep it well fed on things like blackworms, bloodworms, prawn, and chopped muscleslike sen_jie said, hopefully you wont have that problem! other Pseudacanthicus sp would be fine, or maybe something like a large GN, or a common or a gibby. search for the Monster Pleco thread, should give you some ideas
