Tilapia lake virus (TiLV) is a relatively recent pathogen causing serious mortalities in farmed tilapia. The virus appears to be spreading via the usual pathway of importation of live fish with inadequate regard for biosecurity protocols. Countries that are at risk should establish surveillance for TiLV. Unusual tilapia mortalities should be investigated. Importation of live tilapia should probably be reconsidered until adequate biosecurity arrangements are in place. Links to some recent advisories and publications are provided.

Sikkim is a small Himalayan state of India with three climatic zones ranging from tropical to temperate to alpine. The moderate-cool and warm agro-climatic zones are suitable for farming rainbow trout and exotic carp species, while brown trout hatchery and ranching can be conducted in the alpine areas. We report on the status of exotic carp and trout farming in Sikkim including farming practices, constraints faced by local farmers and possible solutions.

Labeo pangusia is a highly prized hill stream carp found mainly in the deeper pools of upland streams. Heavy fishing pressure has led to depletion of wild populations in recent years and the species is likely to become threatened if a conservation strategy is not developed. We report on an investigation into the reproductive biology of this species and on the result of successful induced breeding trials.

We examined the sustainability and economic viability of a model integrated livestock-fish-crop farming system developed by the Fisheries Research Centre, Assam Agricultural University, over an extended period of 13 years. The system was developed as an ecologically sustainable alternative technology for small and margin farmers. It incorporates two livestock components, pig and poultry, with horticulture and carp polyculture. Analysis of cash flow and benefit-cost ration revealed the system to be economically sustainable over the long term.

Tilapia lake virus is a newly emerging virus that is associated with significant mortalities in farmed tilapia. This fact sheet describes the threat to industry, clinical signs, diagnosis, risk factors, prevention and control options and actions that must be taken to minimise the impact of this disease on the global tilapia aquaculture industry. All countries with a tilapia industry must be vigilant and act quickly to investigate cases of mortalities in farms.