Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
 Kuna samaki 30 katika tangi. Thuluthi moja yao ni buluu, na nusu ya samaki buluu wana madoa. Samaki wangapi katika tangi ni buluu wenye madoa?


### Response:
 Thuluthi moja ya samaki katika tangi ni buluu, hivyo samaki 30 / 3 = <<30/3=10>>10 ni buluu.
Nusu ya samaki buluu wana madoa, hivyo nusu ya 10 = <<10/2=5>>5 ni buluu wenye madoa.