Large Animal Clinical Sciences Freshwater Tank

Learn more about the inhabitants of the Large Animal Clinical Sciences Saltwater Tank below!


Metynnis argenteus

Silver Dollar

Natural History: Silver Dollars inhabit rivers throughout South America. They are voracious plant eaters and are informally known as “plant piranhas!” They are a part of the family characidae, which includes piranhas and tetras. 

Diet: They are omnivorous but prefer to eat plant matter. They will consume nearly anything they can fit into their mouth!

Lifespan: Up to 10 years with proper care! 

Behavior: Silver Dollars are naturally shy fish and prefer to stay in groups. You often will see them schooling with one another. 

Silver Dollar LACS

Poecilia sphenops

Common Molly

Natural History: Mollies inhabit slow-moving rivers throughout North and South America. They come in a wide variety of colors, mostly as a result of breeding in the aquarium industry. Female mollies are usually larger than males! Mollies are also livebearers, meaning the female will give birth to free-swimming fry. 

Diet: Like Silver Dollars, mollies also consume mostly plant matter but will eat high protein foods. 

Lifespan: Between 3-5 years.

Behavior: Mollies are peaceful shoaling fish who do best in groups. You may see them swimming either by themselves or with another member of their species. 

common molly

University of Florida


As part of both the Institute of Food and Agricultural Sciences and UF Health, Veterinary Medicine is dedicated to advancing animal, human and environmental health through teaching, research, extension and patient care.



Animal Hospitals

Need animal care? Visit the UF Small Animal and Large Animal Hospitals. From dogs, cats, birds and exotics to horses, cattle, llamas, pigs and many other large farm or food animals, our experienced veterinarian staff is ready to assist.

Animal Airwaves

Syndicated Podcast

Animal Airwaves

Animal Airwaves is a daily radio series that features one-minute segments relating to animal health, ranging from insights into animal behavior to veterinary patient care breakthroughs and trends.

Animal Airwaves