3. Sampling
3.1. Selection of individual specimens
Moribund fish should be selected.
3.2. Preservation of samples for submission
Store fish at 4°C for use within 24 hours (or –80°C for longer periods [up to a few years]).
3.3. Pooling of samples
Tissue samples (spleen and kidney) can be pooled from no more than five juvenile fish (less than 3 cm).
3.4. Best organs or tissues
Although gill and visceral organs such as spleen, heart, kidney, liver and intestine can be used, it is also
recommended to sample spleen and/or kidney tissues; spleen especially may be the most appropriate organ
for the preparation of smears for use in the IFAT.