John D Hirsch MD

Recent Content

Aquarium Nutrition: Part 3

Aquarium Nutrition: Part 3

Amino Acids, Peptides, and Proteins Amino acids are the building blocks of all proteins. There are roughly 20 different amino acids, with half being essential and the other half non-essential.  Non-essential amino acids can be produced by animal cells when the...

Aquarium Nutrition: Part 3

Aquarium Nutrition: Part 2

Acute starvation has many causes, but always occurs when metabolic demand exceeds ingested food energy and triggers the conversion of stored nutrients. Both sugars (carbohydrates) and proteins (amino acids and peptides) store approximately 4kcal/gm. of tissue. Fats...

Aquarium Nutrition: Part 3

Aquarium Nutrition: Part 1

Health is defined as the condition of an organism with respect to the performance of its vital functions. Nutrition is the act or process of nourishing or being nourished; specifically, the sum of the processes by which an animal or plant takes in and utilizes food...