There are three major groups of fishes: Cartilaginous (Superclass Chondrichthyes), Primitive Bony Fish (Sarcopterygii) and Bony Fish (Actinopterygii).
Take a look at the video we made that explains this in a lot more depth.
Animals can suffer from nutritional disorders, just like humans. Pet
food suppliers, animal welfare services and charities, animal owners and
even animal health experts need to understand general animal nutrition
and regularly update their knowledge to include new research. Many
choose to do this via professional development courses and
consultations.
There are many therapies other than the obvious mainstream ones.
Sometimes called natural or complimentary therapies, they include
hydrotherapy, acupuncture, massage, chiropractic, naturopathic,
nutritional, psychological and preventative medicine.
Research informs us about animal health, enabling us to better manage
both individual animals as well as groups or entire species. The context
in which this work happens is varied, for example:
Public sector work by quarantine inspectors, biosecurity officers, policy advisers, universities, zoos.
Community, health, and welfare: by community educators, health specialists and veterinarians, and more.
Veterinary medicines are a large industry. Livestock and pet owners
spend a great deal of money to help keep their animals healthy. Vaccines
and other medicines and supplements are commonly used to maintain
animal health or treat illnesses.