Which is a bird or fish: Black-necked grebe, Black tetra
Black tetra is a fish, Black-necked grebe is a bird
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: Which is a bird or fish: Black-necked grebe, Black tetra
### Input: 
### Response: Black tetra is a fish, Black-necked grebe is a bird