> would we need to do genetic testing or is there something cheaper?
I would assume that DNA sequencing services are pretty cheap nowadays. You would need to understand basic genetics to be able to request them to sequence sites that suit your needs, and then you would need to interpret the results yourself when you get the data.
23andme does a pretty comprehensive profile for $199, and to figure out the species of a fish, much less sequencing would be needed.
You need nothing like full genome sequencing to figure out the species of a sample. Just sequencing some mitochondrial D-loop and cytochrome regions will do. I am not sure exactly, but we're talking some hundreds or some thousands of base pairs only.
I would assume that DNA sequencing services are pretty cheap nowadays. You would need to understand basic genetics to be able to request them to sequence sites that suit your needs, and then you would need to interpret the results yourself when you get the data.
23andme does a pretty comprehensive profile for $199, and to figure out the species of a fish, much less sequencing would be needed.