Epiphyllum anguliger is commonly known as fishbone cactus or zig zag cactus,  a species native to Mexico. It is grown as an ornamental plant for its fragrant flowers that are very large and white. The fruit is delicious and is said to taste like gooseberries,prefers full sun and well drained soil,not hardy
It blooms when older and, larger possibly a few more years from the size as now, it is in 8 cm pot