The eggs are similar to those of the host species but are larger.

The easiest way to look up information is by host species or by disease.

They are now believed to be a natural host species, or reservoir, of the virus.

As a host species splits into two, so do its parasites.

No workers are needed, since these are provided by the host species.

"Invisible Red for one host species doesn't work on the next."

Small eggs also mimic those of the host species much more closely.

A virus can be most deadly when it has jumped to a new host species.

These include host species, age and general health of the fish.

In other host species, only isolated cases have been reported.