Do a google search for Polaskia chichipe and see if you see any resemblance. Wazungy

On the left is Haworthia but the picture isn't clear enough nor close-up to ID specific species. On the right is Euphorbia aeruginosa, but a clearer picture may change the ID. Neither are cactus but succulents.

Hi, if the flower is open check the pollen colour....a TC has yellow pollen while on a CC it will be bright pink. It looks like one of the smoother leaved varieties of TC to me. Some of them are very pointed and crab claw like leaves, yours is exceptionally rounded....could be a hybrid of the two? TC's flowers are angled upwards at the ovary and can stand very upright, CC flowers would hang down more. Gill