This risk analysis reviews and evaluates the current knowledge of diseases of the ornamental fish. Over 500 parasites and disease agents have been associated with the ornamental fish species permitted to be imported into New Zealand. A total of 35 of these have been identified as hazards and subject to risk assessment. Recommendations made as a result of these assessments include:
1. Temperate and sub-tropical cyprinids should no longer be eligible for import.
2. Ornamental fish species not present before July 1998 should not be eligible for import unless approved.
3. A consistent post-arrival quarantine period for all species.
4. Training resources be developed to better identify fish species
5. Actively discouraging the release unwanted fish into the wild.
6. Retail outlets should be informed of potential public health issues.
7. Surveillance be conducted for aquabirnaviruses, iridoviruses, grouper nervous necrosis virus, viral haemorrhagic septicaemia, Edwardsiella ictaluri, Edwardsiella tarda, Lactococcus garvieae, Aphanomyces invadans, Enteromyxum leei, Glugea heraldi, Bothriocephalus acheilognathi, Capillaria philippinensis and Argulus foliaceus.
8. When cumulative mortalities of 20% or greater occur during quarantine, suitable samples must be sent for further investigation.
9. Post-arrival quarantine period may be reduced 6 weeks to 4 weeks, provided that consignments are accompanied by appropriate certification.
10. Where the post arrival quarantine period is reduced to 4 weeks, the mortality rate for taking of samples should be reduced to 10%.
11. Aquarium water from the quarantine period must be disinfected prior to disposal.