As I continue my "blue ram tips" in this section I would like to talk a little bit about the number of rams that one should keep in a tank. I suggest not to ever put 2 or 3 in a smaller tank than around 75 liters. In a heavily planted tank of around 75-120 litersI would suggest putting no more than 2 pairs together. With this I would also suggest that the tank be well planted, since there will undoubtly be territorial disputes. I have found in recent years that if less or more than this number of rams are put in these size tanks or smaller, there will be eventual deaths "unless" the tank is heavily, heavily planted. Then you can sometimes get away with double this number of rams. Of course, if you want to put one single ram or even one pair, then this will also be OK. This is depending upon the compatibility of the pair. This is my favorite tropical of all and I love them very much. I recently have got back into rams last week and have newly free swimming ram fry as of today.
I have found that rams are a great addition to any placid community tank. They can be sensitive to water quality though, so make sure you only place them in a well established aquarium. These guys are very shy at first and are very peaceful. I've had instances where my rams are picked on by my krib and the serpae tetras I used to have. My one ram I have now is funny because he'll throw out his fins, deepen his colours and look spectacular, trying to scare my little 3 cm Burmese loach. My loach will then make non-aggressive movement in the direction of my ram, completely disregarding his display. My ram then flees the scene, fearing retribution for his empty threats. I really recommend these fish if you want to add colour and personality to the mid/lower level of you tank. They are mildly territorial, but will, in my experience, give way to any challengers. My betta, krib and dwarf gouramies have no problems in relocating my current ram. One problem I've had with rams is that they don't eat flake food. I recommend sinking foods, shrimp pellets and sinking cichlid foods. I've never personally witnessed any of the rams I've owned eating, but they wouldn't have lived as long (in my experience about 2 years) if they hadn't been eating.
Our male bue ram has four spikes rather than the two to three I've heard described. Although we had a hard time finding him a mate, he has finally accepted a female. We bought him with a female and they bred only a few days later. However their eggs never hatched and the next week his attitude changed. He began chasing her and stressing her until she couldn't take it. So for a long time he was a bachelor and had to make due with sparring our Chinese algae eater. Now he seems happy with his new mate and judging by the deepening color on her expanding tummy they'll be laying eggs soon.
I have been keeping blue rams for a year now. They are fabulous wee fish - jam packed with personality and colour. They all have different characteristics though - some are more shy and retiring - some are bold! I had one (all 3 cm of him) that was so spunky he faced down a very cantankerous female krib (8 cm) who ruled my tank - as soon as I put him in his new home - and then went on to face off against my 10 cm firemouth. What a fish. I have had rams lay eggs many times in my aquarium, but I never had any fry yet. The eggs end up eaten. Always the eggs have been laid on top of leaves - even though I put down flat stones on the gravel for them. Interesting and beautiful fish - but you will need to keep up with your water changes, I suspect, for them to thrive. The females are every bit as colourful as the males, in my opinion, especially when ready to breed with their crimson flashed bellies.
These fish hate crowded tanks! If they are kept in a decent sized tank, territories and aggression will generally not be an issue. However, in a smaller tank they should not be kept with a lot of fast-moving fish such as tetras or rainbows, as from my experience this will contribute to stress and a lot of chasing around on the rams' behalf.
These pages have enough comments to give the reader a basic idea on the topic. Further comments are still very welcome (through the site's contact form) as long as they provide new and/or advanced information not yet discussed in the existing ones.