I have always liked puffers, but I have not taken advantage of many opportunities to keep them. When this species popped up I decided to import a bunch of them and see how they do. What an awesome aquarium fish! C. borneensis is very uncommon in the hobby, which is why we do not know a lot about it. It is very similar to the C. irrubesco, which is more common, so we can extrapolate a lot. My first surprise was how large he males came in. When I think of the genus Carinotetraodon, I think of the pea puffer fron India (C. travancoricus). The Borneo red eye is larger… but does not grow as large as the true Tetraodon sp. I learned one lesson the hard way… do not kep them with cory cats. You will see what I mean in the video….