I just got a plakat and it showed aggression when it saw a small snail (which I didn't know had slipped in at some point, probably when I introduced the plants). It didn't do anything, just flared its fins. I want to add otocinclus to the aquarium (the aquarium is 10 gallons), but now I have doubts because I don't know if the betta, already settled and having established its territory, might harm the otocinclus.
Posted by Nietzkoski