What causes fish ich?

The disease is caused by the ciliate protozoan Ichthyophthirius multifiliis, commonly called ich or ick. Fish infected with ich typically develop sma......

What is Pharyngoesophageal?

Pharyngoesophageal Segment. An anatomic tube composed of a mucosal lining surrounded by a layer of muscle that extends from the nasal cavity to the f......