hillbilly;2547356; said:Not sure about UK liters, but you would never want to keep just 2 discus together unless they were a mated pair. Discus are social creatures who naturally live in large groups. 2 discus in a tank will pick on each other constantly, resulting in one of them being stunted, (a runt). If you want a small tank for discus, I would suggest a 40 gal. US (not sure what that is in liters, and too lazy to look it up), and 4 discus. It would be possible to keep them in it for life, unless a couple of them paired off. Hope this helps.![]()
Casper;2549956; said:That tank is just too small. 1 discus could be fine but everyone suggests to keep them in groups of 5 or more or as a pair. A 225 liter/60 gallon tank would offer you the chance to keep a group of about 5 in there as well and provide more options for filtration (discus don't really like too much flow, so sticking a canister or hang on the back filter might produce alot of flow in a 15 gallon/54 liter tank).
Keeping 1 discus by itself might prove to be too stressful. I am guessing you don't have much experience with discus fish, so why keep your first one in a situation where it will feel stressed (being by itself) and then it may catch some disease or waste away, spoiling your experience?
Now I'm going to contradict myself and say I do have 1 solo discus fish in a 20 gallon/75 liter tank which I had to treat for clear feces. It didn't eat for probably 3 weeks so I figured it was a goner, but my supplier suggested using metro and he recovered. Now I keep the guy by himself because I don't want to reintroduce him to the tank since he'd be at the bottom of the hierarchy and will get picked on.