The shape of the flower leads this type to be called Dancing Ladies. There are many, many hybrids like this, and they are typically very easy to grow.
You got a really nice one that blooms when very small, and has lots of large flowers for the plant size. It may become a large plant with time, or it may stay small.
Care is as for any other Oncidium hybrid or complex Oncidium hybrid. The Dancing Ladies types don't usually have cool-growing ancestry so they are quite adaptable to warmth.
They get a large root system of very thin roots. This suggests they like water. My observation has been that many orchid genera begin growing roots when they feel the need, but Oncidiums will not begin growing roots unless the root zone of the plant is already damp enough to support new roots.
Success with these is a matter of watering enough. Unlike Cattleyas, these should not stay dry for extended periods. In my warm to hot conditions I can't let them dry out at all.
I think most people who struggle with Oncidium hybrids don't water enough, or keep them too warm. The first problem is easy to remedy. The second problem can be addressed by buying appropriate plants for the growing conditions.
I have tried a lot of media and methods for growing them. They didn't do well mounted for me even with daily watering; they dry out too fast here. If I rig an automatic spray system I will try them mounted again.
Semi-hydroponics works if the roots are always in the damp zone. If the plant doesn't have roots that reach to the damp zone on transplanting, the plant will dry up and die unless it's watered every day, until the roots can reach the damp zone.
Similarly, plants in larger LECA medium in non-S/H conditions need to be watered frequently enough that the medium doesn't dry completely. I don't have time for this.
Wet, packed sphagnum moss is an ideal medium during my cooler winters! I even had to stand them in dishes of water. They grew prodigiously. But as soon as temperatures got over 38C / 100 F or so they died overnight. If I had cooler temperatures year-round I would use this method.
Large bark works well for me year-round if I water enough. During warm weather that certainly means every day. Watered this much, bark degrades faster than it would with Cattleyas, so you will need to repot more often. But these hybrids produce much more new growth than most Cattleyas. Most of the time you will need to repot because they outgrow the container, not because the medium is bad.
(I have some hybrids with cool-growing Miltoniopsis ancestry that survive warm temperatures better when they are somewhat dry between waterings. I have a sunny winter, so I am treating these as semi-dormant during summer, and watering heavily during cooler times of the year. But this doesn't apply to the original poster's plant, which probably likes warm weather.)
So, for your Dancing Ladies plant... I believe this is one of the bare pseudobulbs you got as a gift? Hasn't it been in that pot for about a year? I would leave it in that pot for one more new growth cycle. At that point the plant will be almost out of the pot. After that new growth flowers, it will begin another new growth. That will be the time to repot. Large bark would be good, and select a pot that will give space for another 2-4 new growths. There is a good chance your winter temperatures will be high enough for the plant to grow happily all year.
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