Fish Diseases and Management

6.2.6 Toxic algae

The toxicity of exposure of rainbow trout and tilapias to known algae and non-toxic algae has been investigated. These were presented both orally and parenterally and the fish demonstrated a remarkable capacity for detoxication of orally presented algae which were nevertheless highly toxic when presented parenterally. Toxic marine algae, the ‘red tide’ organisms with acute necrotizing branchial lesions.