This pretty plant is related to Hoyas and is very easy to look after. They are becoming less rare now which is all down to their growing popularity and we can clearly see what's driving that. It gets its name from the pretty patterns on the leaves which resemble the markings on watermelon rind.
Fun fact: these plants are epiphytes, meaning they grow on other plants, like tree branches.
They do ok with a bit of direct light but prefer indirect light most of the time. Try them in a sunny spot and see - if the leaves start turning red, it's time to move it to a shadier spot.
When watering, try and mimic the forest rain running past the roots - give it a big drenching but make sure it all runs through. They are sensitive to overwatering so only water when they're dry. It would love a regular misting, if you're that way inclined.
Live plant in houseplant soil in a plastic pot
Length of the strands varies but is no less than 10 cm.