Keep parentage records
Record source, strain, location code and relatedness. Without records, a visually attractive fish may have uncertain ancestry.
Avoid repeated close pairing
Inbreeding can increase expression of harmful recessive traits and reduce vigour. Outcrossing also requires compatible, accurately identified stock.
Select for function
Do not perpetuate extreme fins, bodies or eyes that interfere with swimming, feeding, vision, birth or normal behaviour.
Disclose hybrids
A hybrid can be healthy and attractive, but it must not be sold as a pure species, location form or established strain.
Know when to stop a line
Repeated deformity, poor fertility or chronic weakness is a reason to discontinue breeding and seek expert advice.