Fish farming is already an activity with a mixed image, while many people love it because it is economically successful, others dislike the dislocation of natural systems that this allows. Especially disliked are ocean pens where the fish are kept in large cages of nets in coastal water. Economically this is very successful, but environmentally it is a problem because of the excessive amounts of wastes it produces in a small area.
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| Anatomy | Fins | Blood | Nerves | Magnetism | Swim-bladder |
| Skeleton | Sight | Scales | Hearing | Electricity | Osmoregulation |
| Digestion | Gills | Smell | Muscles | Lateral Line | Thermoregulation |
This page was designed and written by Mr Gordon Ramel