Yep. Measurements such as flow, turbidity, temperature, ph etc for each
"sampling" site. Conditions probably vary within each site according to
"zone". Characterization of other habitat features, plants, bottom
composition, insects, terrestrial features, etc. Access to inexpensive
DNA sequencing as a collective effort to obtain genotype information,
also specimens can be selected for breeding that are most different from
each other. You could always just keep them in a large tank and let them
go to it. Instead of strict scientific regimen simply use a rule of
thumb for "sample taking" for breeding purposes and use phenotype
(visual characteristics) to determine species strain.
This would relate to keeping fish, not any other take purpose.
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